For example... the big crash on the bridge. Caused by the Fantastic Four. One guy would have committed suicide if they hadn't been there - instead there was a huge pile-up, property damage probably in the tens of millions, quite possibly several deaths and injuries, and a seriously damaged bridge that would have to be closed for months.
Pretty much the same thing happens at the climax - most of the damage is done by the four, not Dr. Doom. It isn't Doom that chooses to puncture a swimming pool, or throw a car at a bus. It isn't Doom that risks setting fire to the atmosphere.
I could go on, but it's all like that. There seems no reason for their sudden popularity, nor for the sudden unpopularity of Victor.
It wouldn't have been hard to write a script that treated the characters with dignity but still gave rational reasons for them to be regarded as heroes, but it feels like the screenwriters simply didn't bother.