This article is about Cloudflare attempting to deny Perplexity access to their demo site by blocking Perplexity's declared user-agent and official IP range. Perplexity responded to this denial by impersonating Google Chrome on macOS and rotating through IPs not listed in their published IP range to access the site anyway. This means it's not just "you're free to deny access to your site arbitrarily", it's "you're free to play a cat-and-mouse game indefinitely where the other side is a giant company with hundreds of millions of dollars in VC funding".