I still remember some of the Berkeley genetics lectures as some of the best learning materials I could find for my upper-level courses. Later I tried to refer to them and found they were all gone. I wish there was any other option vs. just taking them down.
As we all know, there is no middle ground between "paying for video captions" and "financing all money ever for the rest of time", and I think that's unfortunate.
I feel like there is a logical paradox here. You're using a bigger hyperbole to criticize a hyperbole. If this argument is valid then it invalidates itself.
I think a more accurate comparison would be burning down a library because you can't afford the manpower to check every single book for arbitrarily defined wrongthink.
Except you really don't need to do that. Your risk assessment could explain it's read only, you've done some basic searches, and that's proportionate given the content and the fact you're a small website. Job done.