As of a few minutes ago old.reddit.com now seems to requre logging in to access it.
Shame as it was still the best place to browse for info about some niche interests.
Edit: Seems like they might be testing the change as it is hit or miss at the moment.
Edit: Adding this to My flilters in uBlock Origin seems to fix the issue for the time being:
||reddit.com^$header=referer:
I could excuse account locking for “own safety”, but removing the 10+ old acount posts due to an automated filters was it for me. First it was one and in a few days all the posts were filtered out! Not fine. Reddit sucks.