Fourth of all, why do people even listen to the song? Obviously it is not your style, so why bother even caring? I think people get bothered very easily about things not worth the time or effort to be bothered by.
Pretty much this. I get this similar kind of sentiment when people just choose to go along with the crowd and hate on a particular music artist without any solid reason to, just for the sake of hating. The song has presumably done its job. It's attracted the kind of audience it was probably aiming for and no one's holding a metaphorical gun to anyone else's head demanding them to listen to it.
I've never actually heard the song before until today when it randomly came up on a radio channel that I usually like. I gave it a chance and unsurprisingly decided to hate it, and that's fine. Unlike several people I know, I'm not going to go off on some massive rant about it when it's just not music to my tastes at all. There are probably more important things in the world that I could be ranting at. Besides, I can just avoid stuff related to Willow in the future anyway. xD