Wikimedia hosts what UK puritans consider pornographic content.

A lot of it. Often in high quality and with a permissible license.

I would link to relevant meta pages but I want to be able travel through LHR.

Musea of fine arts also host what puritans could consider 'pornographic content'. I believe 'Birth of Venus' is the standard go-to example.

To be fair, Wikimedia/Wikipedia also hosts a full copy of "Debbie Does Dallas" does to a fluke of copyright. See: https://en.wikipedia.org/wiki/Debbie_Does_Dallas

I do kind of wonder if it benefits Wikipedia for them to allow so much on commons.

I get it’s hard to distinguish between pornography and something that might have educational merit at the edges, and have a workable policy.

But still I can’t help but think this is not really helping.

I don’t think we disagree.

A kid can go to Wikipedia and read https://en.m.wikipedia.org/wiki/Sex

They can also go to the library and read the encyclopedia.