I never understand people who make comments like this, what were you expecting going into Twisters? Citizen Kane? I watched Twisters today, it was a mindlessly fun little movie, exactly as expected.
Even mindless movies need a hook to pull you in. Fast & Furious has all that hokey family stuff, but the relationships between characters is the emotional core that makes you give a shit about all the garbage flying around on screen.
I'm sure this movie probably has/attempted something like that, but it doesn't hit for everyone and they're just left wondering why they're watching a pointless animation for 2 hours.
I've been in both sides of this. X-Men: Apocalypse stands out in my mind as being just a bunch of pointless tropey CGI garbage that I was relieved to finally walk out of. But I enjoy all the F&F movies just the same, even if I wait to catch them on streaming since Paul died.