This is the real issue, and it's why just cancelling your discord subs and moving to stoat or etc isn't a solid long-term strategy. If KOSA passes in the us basically every platform will have to do something like this.
That's a big if. And yes, if push comes to shove I guess I'll become a forum pirate. I won't tie my real ID up in anymore private servers than absolutely necessary (which as of now is governmental entities and banks, a highly regulated sector).
Multi-billion dollar corporations have never had any problems lobbying for their interests before.
Perhaps collecting everyone's messages, social links, scanning their faces, and then adding ID data in for "ground truth" is the real interest here?