I used to think like you do, and after a bit of thinking and analysis I quite honestly I think the SJ folks have hitched their wagon to a doomed horse. Academia itself is very likely to pop in the next decade, in somewhat spectacular fashion, and it’s going to leave them without their main indoctrination path.
Secondly — who is their organized opposition?
I don’t know that they “need” organized opposition to fall apart. I think it will happen naturally. That said, these “intellectual dark web” folks are doing a bang-up job of at least pointing out the schisms between the SJ program and science.
As I say, I’m not sure the SJ stuff really bothers me that much, if I view it as a religion. Working under a SJR Human Resources Department in a professional setting as a non-SJer probably isn’t too different than working under a Christian HR department as a Muslim or atheist. Basically, live in the closet. It’s not ideal, and it’s occasionally discriminatory, but we’ve lived through similar times in different frameworks without being too worse for wear. Sit tight and wait patiently for it to eat itself.