The GOP is scared shitless of the rising power of women in modern society, and being able to criminalize and consequently attack the revenue stream of sex industry workers is a way to blunt it.

I agree that this is a big part of the war on porn. These stuffy prudes are seeing soceal/cultural norms changing before their eyes and they hate it.

I also think they're using it as an angle of attack to undermine online privacy/security in an effort to chill free speech/expression online. It's all about control.