For me, I think Infinite Stratos isn't nearly as bad as people make it out to be. It's not good, and I have my issues with it, but I've seen worse
Honestly I don't feel like I usually see bland shows getting that kind of hate. It mostly seems to be that a lot of people will ignore the show, and then if it has some merits it'll also have a dedicated glazing squad. Even with Demon Slayer I mostly see people saying it's overrated, not that it's actually bad.