Couple weird issues with the way this was implemented.
Here's a search for "synergy wayland" in Video and Web:
Chris Titus Tech is not a great channel, so I go to remove it. The "Creator" is listed as "NixOS Revisited" (which is the title of a video also appearing in the results)
With it blocked, the Creator field is listed as "NixOS Revisited" (it should be "Chris Titus Tech"):
However, now blocked the results are now removed from Video search which is good:
But it still appears in Web search:
So the bugs here seem to be that a random video title gets selected as the creator's name, and video results from that creator still appear in web search.