>like Reddit which no longer allows anonymous access to NSFW subreddits in the UK

I haven't heard of this. Is Reddit enforcing ID verification or are you meaning UK residents simply need to be logged into Reddit to access this content?

>Is there anything we can do to combat this and hold out the open internet a little longer?

The internet is on its deathbed anyway. Generative AI is administering the fatal injection. This experiment has nearly reached its conclusion.