His rebuttal was awful, yeah, he does raise a few good points, but a lot of what he does is picking anything he can to show how wrong RLM's review is. For example, RLM says something like Anakin only appearing 45 minutes into the movie and therefore not being the main character, while JimRaynor just says something along the lines of "no, Anakin appears 30 minutes into the movie", something which is technically true, but doesn't refute RLM's point at all.
Of course it does. A character showing up for the first time 30 minutes in is a a pretty big difference of them showing up 45 minutes into a movie with a running time of around 130 minutes. RLM was not "technically true", he was just plain wrong about this fact and for someone who is reviewing a movie they should really know that.
He also uses words such as "maybe" and "probably", where he just tries to make excuses based on what was not shown on the film, but how something in the plot would in theory work, even though that means Lucas didn't assemble the plot very well in the first place.
I don't recall how often he uses words like "maybe" and "probably", but I do know that he tends to use information from the movie itself and basic logic to refute many of RLM's points. Honestly, I find a bigger issue when RLM's reviews tends to boil down to him asking "Why does this happen?" "Why do characters make these decisions?" "Why, why, why?" Most of his so called "questions" are easily answered if he bothered to actually sit down and pay attention rather than try to nitpick ways to show how bad the movies are.
His "rebuttal" is one of my main problems with these kinds of fandoms, when a brand is so popular, fans try to make excuses and s*** on critics. People like RLM and FilmCriticHulk seem to have a good grasp at what makes a story work, and they explain it as well as they can, also using hyperbole in order to make things more entertaining. The defenses i see being used for the Prequels are usualy too fanboyish for me, it ranges from taking a certain point to personaly (like RLM saying Episode I lacked a protagonist, while defenders ignore that he also says not every film needs this, but with Phantom Menace it might have worked better), to fans of the prequels who don't understand hyperbole, and end up feeling offended by the reviews.
I've seen plenty of Star Wars fans and Raynor acknowledge there are flaws within the movies themselves (Raynor even concedes on a few of RLM's points in his rebuttal), but when points can easily be refuted of course they're going to provide a counter argument. I tend to find the fans who are blinded by their love for a series to be few and far in-between the more levelheaded fans. That being said, the extremist fans on both sides of the argument ten to be the most vocal. This is the internet, fanboys and the hyperbole they spew always tend to be the more vocal, but they are in fact the minority when it comes to any fandom in general.
I really don't see what makes RLM seem like they have a good grasp on what makes anything in a movie work and I've never even heard of FilmCriticHulk or seen Star Wars fans bring up his work so I don't have an opinion about FCH either way.
As for some fans being offended by RLM's points, well of course people are going to feel offended when RLM outright calls people whole likes certain movies stupid.
RLM didn't mock Jim Raynor's rebuttal because they have more to do than read a 100+ pages, i don't think they think as much about the Prequels as many defenders would like to think, they just seemed to make those videos for fun at first, and then said all they had to say about it. Since then, they have quickly moved on to other movies and seem to want to stay away from having to enter into another Prequels argument against fans. They have a good reason to, since it doesn't matter how much they argument against the prequels, there will always be defenders trying to excuse every single decision made by George Lucas, and ignoring obvious logics regarding structure, plot, etc. in film.
It would be different if RLM acknowledged the rebuttal but said they weren't interested in anymore Star Wars discussions and would like to just move forward. Instead, they full on mock Raynor as a person and presented him to their fans as nothing more than a blind fanboy who offered no real counter argument. Raynor, and other fan, has in fact made it very clear that there are flaws within the PT. Again, the fanboys you are thinking are the minority, but tend to be the more vocal.
Besides, nothing stopped RLM from doing a special TPM commentary when it was re-released in 3D, long after the rebuttal was released.
I also am starting to hate a recent notion among fandom that the hate against the Prequels only started with RLM's reviews, too often i see a fan saying everyone loved those films until RLM "brainwashed" them, pretty much ignoring how divisive they have been since day one.
There are always going to be those who are blinded by their love or hate for something that it keeps them from acting rationally, but they're just the loud, vocal minority. Most fans acknowledge the PT received mixed reactions and are fine with that. Still, I have noticed most prequel fans do have a bone to pick with the RLM reviews, but at least they have a good reason.