A good analogy for this is an episode of Star trek TNG. https://en.m.wikipedia.org/wiki/Booby_Trap_(Star_Trek:_The_Next_Generation)
In the episode Geordi had the computer create an ai generated hologram based on another person. He then gets the hots for the generated person, probably banged her offscreen and clogged the bio filters.
Not a perfect analogy but the core of the point I am going for is that the romantic aspect in the episode is just advanced escapism. The real world chatgpt girlfriend you ask about is similar. Sure in the short term it feels great, but it is not real connection.
It was never just the anonymity, it was the lack of consequences as well. Combined those two often lead to people showing their worst selves.
Now though? Often those worst characteristics are applauded by others. It’s disappointing.