I remember this was linked on the LeftWingMaleAdvocates subreddit before it was privated. I do not know who made it, but it is an archive of all posts and comments submitted there. The association with the red pill is unfortunate, but this seems like the best way to read the old posts now.
Edit: Seems like the subreddit is back up. https://www.reddit.com/r/LeftWingMaleAdvocates/
There is a clear right-wing majority on r/MensRights, but I think it’s mixed enough and still a good site for discussion, and especially to get valuable content.
But I also have to say that that sub used to be much better, more focused on rights, with stricter mods, even the community would quickly intervene when someone did things like mistaking women for feminism.
I think it is getting worse due to a gradual migration from mgtow.