Yeah. Ripping on Hedorah isn't the cool thing to do right now.
Banno, while he failed in some regards, had the guts to try some different stuff with his Godzilla movie. And while it's often called the most ridiculous film in the series, it also has a very strong argument going for it as most horrific film in the series as well- Main cast members are maimed or killed without second thought, people are skeletonized, Godzilla is badly injured, people asyphxiating left and right.
"Hedorah" is an odd movie in many respects, but it's never boring.
Ripping on the Heisei movies, now that's hip, at the moment.