That is one view of the problem, but the one people are fixing with proof of work systems is the (unintentional) DDoS that LLM scrapers are operating against these sites. Just reducing the amount of traffic to manageable levels lets me get back to the work of doing whatever my site is supposed to be doing. I personally don't care if Sam Altman has a copy of my git server's rendition of the blame of every commit in my open source repo, because he could have just cloned my git repo and gotten the same result.