blocklist.site, the former website of the Blocklist Project, appears to now be owned by scammers.
According to public reporting, which I have independently confirmed, blocklist.site redirects to malicious websites when visited. During my testing, I encountered notification scams, a fake "virus detected" screen, and a purported chocolate bar giveaway.
https://github.com/blocklistproject/Lists/issues/1586
When accessed via Tor, a VPN, or when using a known online sandbox, the website redirects to a page claiming the site is for sale.
https://tria.ge/260205-ec9v5sev8c/behavioral1
Over the last few years, the lists have seen intermittent periods of activity, but have been largely abandoned.
While I have not independently confirmed this, I suspect the domain registration for blocklist.site expired, and it was purchased by threat actors.

[Add] https://blocklist.site/ as it redirects to ad campains · Issue #1586 · blocklistproject/Lists
Domain to add blocklist.site Target blocklist redirect Category Advertising / Tracking Evidence / Reason The site redirects to random other sites which either are trying to convice users that they ...