There are lots more examples than Wikipedia, although that's a good one. Reddit, Twitter, and YouTube are other examples where you can find adult content if you're looking for it, but if you block the whole site, you block a whole bunch of useful and in some cases educational content along with it.

Now all that being said, this is a decent enough way to at least block the obvious stuff like Pornhub. For some, that might be good enough.

Well this was one rabbit hole I would've preferred not to have visited...!

Thank you for that link, reading through the filenames was quite humorous. Agreed, what is considered "adult content" varies significantly between people, and whether children should be able to access what is considered medical/anatomical reference is a frequent argument.

I have never seen the wikipedia "bad image list" before - and I am confused ... after clicking on a few of these images, randomly, every single one (under File Usage) reports:

No pages on the English Wikipedia use this file (pages on other projects are not listed).

... so why do these images persist in the wikipedia ?