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:
Le narwhal eats bacon at midnight! An updoot for you, good sir! You are a gentleman and a scholar. That’s a heckin cute pupperino, too precious do not deserve!
EDIT: Thanks for the gold, kind stranger!
To make you feel as if you never left
And my axe!
You are missing the second edit saying that this is your top post