I think people are glossing over several things which make the story of Deadpool 2 so great and poignant.
I don't think that the first Deadpool had a tighter story -- it had a simpler story. What I find is amazing about the sequel is that it's not a run of the mill 'comic book story' where the hero has to stop some evil plan.
Not unlike The Dark Knight and Logan, but in a VERY different way, Deadpool 2 pushes the envelope on what a comic book movie can be. At its heart it's a story about loss, and about how it is important to help others who have lost something... even hope.
It gets spoiler-heavy now.
It's a movie in which the protagonist does all he can to prevent a kid from even becoming a villain, which actually carries a very important message about child abuse and its inherent consequences.
And they didn't even take the easy road by making the kid too likeable. He's a little *******. And what's beautiful about that is that Wade helps him regardless of that, because he (a guy who's pretty disturbed himself) sees something good in him... probably because he can relate to the kid's anger and confusion, and maybe could've needed someone to believe in him when HE was a kid.
I didn't find the story to be muddled at all, and thought that it was as tightly-paced and constructed as the original. It's just a very different kind of story. One that is more layered and complex.
I really hope that more people give the story and the weight it carries a much closer look, as it deserves to be delved into and acknowledged. People are not giving this movie enough credit. For once, we have another 'superhero movie' which ACTUALLY IS ABOUT SOMETHING, as opposed to just ticking the boxes of what every fanboy's wet dream is about.