The main Transformers film page has some 31 million likes
https://www.facebook.com/transformersmovie?fref=ts
More than any Marvel film page. Being in the 15-20s demographic myself, i see more yound people liking these types of movies more than superhero ones, which is a genre that is ignored by many that don't like the genre, Avatar and Titanic are some of the latest films to actually get an equal record all around the world.
No place really is the "law", cold truth are ticket sales and box office grossing, which shows how many people went to see a certain film, Transformers 3 was already the 3rd in that film series, most of the people who went to see it liked the film. Internet usually tries to make the views of the GA more similar to critical reception, but that is never really the case.
i've already given you plenty of facts, yet you keep insisting that the GA votes on sites like Rotten Tomatoes, but that's simply not true, the people that go there are the ones that care about ratings, most of the public doesn't, hell, they'll just respond to you saying "what matters to me is if i liked it, cevery person has his opinion". Maybe all the people you hang out with go criticise every aspect of a movie and rate it in Rotten Tomatoes, but that's now the reality, otherwise, you wouldn't have TF3 making all the bank it did, or being so popular in the social media mostly used by people in their 14-20s as Facebook is.