I find it helpful at least...
1. See a vuln domain reported, clone the site. 2. Wait for it to expire and snag it. 3. Republish the site with malware 4. Watch people dither about domain names and stuff instead of taking time to fix things.
GitHub.io domains, workers.dev domains, etc are all free domains.
Clever use and abuse of some startups can get you a free domain with a signup package that you can subsequently transfer out, but those are harder to find these days.
Seriously, the bad guys figure this out all the time.
My work blocks every commercial AI service, but I just want to read the static blogs and benchmarks from the large labs to keep up with recent news and developments in the space and the Wayback Machine trick works perfectly for that.