A real screen recording — Chromium with the extension loaded, browsing live YouTube.
One channel keeps filling the search results; one click on the 🚫 button purges every one
of its videos, and a visit to its channel page is walled off.
0:03 the landing page0:14before — one channel all over the results0:35 one click on the 🚫 block button0:45after — every video from that channel, gone0:58 their channel page is walled off