Fullfact.org is excluded from uBlacklist blocks, does GOOG format it differntly?

I notice that results from fullfact.org don't have the "Block this site" link next to them.

Doing a site search on fullfact.org org, eg "does ivermectin cure covid site:fullfact.org" returns with a page where with every result lacking the "Block this site" link next to it.

Searching the uBlacklist code base for "fullfact.org" returns nothing.

It seems that Google formats any results from fullfact.org in a manner that prevents uBlacklist from detecting it to block it.

Even adding it manually to the blocked sites list prevents doesn't enable it to be blocked.

What is going on here?