I’m aware of what a glitch is. What I’m saying is that they are already targeting these specific subs regardless of their moderation status. The only ‘glitch’ here was that they got caught pushing an agenda.

Then why weren’t there loads more “unmoderated” subs of different categorize blocked?

If it was just a glitch, I suspect that the affected subreddits would better represent a random distribution of topics than what we witnessed.

You are probably looking for something like a 'Dryer Wall Flange": https://www.homedepot.com/p/Everbilt-4-in-Dryer-Duct-to-Wall-Connector-EZDOCKHD/205046832