I was on my last warning, maybe they ramp up scrutiny then or they have just ramped it up recently.
But yeah that was the post that was linked when they gave the reason for a ban and It was rather fast as well. Less than few minutes after upvoting. I was still in that thread trying to explain other person what R1 was.

Same, broke R1 and the last breaking of it was rather vague link. I just upvoted a comment that made fun of R1 under a post showing child abuse. Turns out that goes under it as well.

I finally got banned from Reddit and by now they have rather effective methods to detect ban evasion.