I’m not sure if this is new, but when I clicked on the /r/pics protest post link from the frontpage here, I was redirected to this: https://old.reddit.com/premium
I’m not sure if this is well-known or not that they’re pushing it now, but it’s the first time I’ve seen it, especially on old.reddit.
I was a premium member a while ago because I love reddit and wanted to support it + get rid of adds on the mobile app (I use their app) but I cancelled it during the last blackout (I think it was the 2021 one about hate speech).