The PayPal rule is still being enforced. I was previously unaware of it, until some busybody reported my fairly popular mod and I saw that it had been removed from the Steam Workshop. Worse, there was no indication about what was wrong, nor any point of contact to ask. And everyone knows how difficult it is to get an answer out of Valve.
It was only after submitting a ticket to Paradox Interactive that I saw the list of rules here, which they use to remove things from the Steam Workshop. Someone did restore my mod after I removed the donation link (which was completely optional), but there are rules on their list that are even more ridiculous and harebrained. You can't use Creative Commons material because it would require you putting CC attribution in your mod? You can't claim copyright over a project that you legally own the copyright to? This is nonsense.
CO/Paradox are out of line here. They require that mod-makers not even ask for donations so that fans can help support their hard work, they put draconian restrictions on what licenses you may use, make incorrect claims about copyright, and then turn around and financially benefit from the interest driven by the mod-makers' efforts.