I hate it when Roger promotes /r/btc as free speech. It's fucking not!
Reddit by it's nature is censored. I hope Roger is smart enough to know that it's a damned if you do damned if you don't game. A lot of ancap types seem okay with mob-rule tho, so idk
Could be the original poster removed it themselves. Check the mod-logs. My major point is that vote brigading, post sliding etc. is easy. Also Reddit has been caught editing posts.