The regulators of OSA say otherwise. Or at any rate, they refuse to agree and won't rule it out.

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For the geo-blocked, reproducing relevant content [0]:

> A few months back I wound up concluding, based on conversations with Ofcom [1] that aphyr.com might be illegal in the UK due to the UK Online Safety Act.

> [...] This blog has the same problem: people use email addresses to post and confirm their comments. I think my personal blog is probably at low risk, but a.) I’d like to draw attention to this legislation, and b.) my risk is elevated by being gay online

[0] https://aphyr.com/posts/395-geoblocking-multiple-localities-...

[1] https://blog.woof.group/announcements/updates-on-the-osa