UA aside (and presumably the spirit of the UA and robots.txt is about measuring intent), Perplexity could announce an IP range to allow people to reliably block

UA aside (and presumably the spirit of the UA and robots.txt is about measuring intent), Perplexity could announce an IP range to allow people to reliably block the requests. Problem solved. Read a few comments implying that a browser UA implies capabilities, tbf they should simply change their UA and not use a generic browser UA.