(Nothing even happened, this guy was just mad lol)

The fact that you let some idiots from the internet trashpile change your opinion on the movie you loved, proves that you are not a trustworthy person, as any dumb thing can make you change your mind on anything you believe.
If this is how your taste in movies “evolved” with your age and maturity, then I’m afraid to say my child, but it went backwards! Go enjoy Game of thrones, Breaking Bad, or whatever piece of garbage the general audience likes right now, and leave watching movies like this to people who can appreciate them. Hope you come back to the movies you used to love once you wake up from the trance of wanting to look “adult”, and listening to “criticism” by “critics” like these.
There is no good and bad in art, only things which resonate with us and the ones which don’t. Art can be bad for you if it harbors a harmful message or ideology, but I’m sure Sharkboy and Lava isn’t being dismissed as “bad” because of it’s harmful messages, but because it doesn’t meet some arbitrary definition of “good” some pretentious, pompous pricks came up with sometime somewhere. I reject judging art by some arbitrary standards, instead of the feelings it makes me feel, which is what most art is made to do, and Sharkboy and Lava makes me feel pretty good when I watch it, unlike something like Game of Thrones, which is why I say with conference that it’s a great movie!
Don’t be controlled by negativity!
Don’t let anyone tell you what to like, not even people like me.