got the notification to verify my age when trying to access NSFW posts or profiles already for a few weeks now, but as of today my whole account is blocked unless I verify. I guess that’s it then. Based in Austria btw, so there is no specific law in place that forces Reddit to implement this and I will definetly not give my personal information to Persona, a company that belongs to Peter Thiels Palantir group.
IIRC they can fingerprint you based on your writing style and interests.
thats not all they do, they look at your browser , timezones. how long you linger on a page on reddit and if you are scrolling or commenting, up and downvoting.