Yeah, modern art is almost universally bad. I suspect that it is because artists are absolutely soaked in art from all over history. They study it, they live and breathe it, and by this point they are bored of it. So they try to make something different and unlike the art of old, but have lost sight of the fact that normal people aren't jaded and bored of old art like they are. So they wind up making stuff which can only possibly appeal to others who are just as soaked in art (and bored of the old stuff) as they are. It basically turns art into this giant circle jerk of artists making stuff to impress each other, having lost touch with their audience.

I've noticed the same thing with other fields as well, not just art. Cooking is this way, for example. The food that fancy chefs at fancy restaurants make is so ridiculous that it feels like a joke sometimes. And as far as I can tell, it's the same thing. Those chefs are bored of normal food, are trying super hard to make something creative that has never been done before, and have lost sight of the fact that it's just not going to appeal to people who aren't as bored with food as they are. Maybe it's the inevitable result of being steeped in a craft and spending all your time on it, IDK.