I prefer Reddit communities over SO any day. SO, folks are so high headed, they will bash you with anything that doesn't suit their framework. I am sure with GPTs slowly they will lose traffic.
Threads don't get closed due to age on Reddit (they used to be archived but this stopped a while back). Mods can lock threads but this is used to moderate content.
And which subreddit locked your thread because a similar question was asked six months ago? I find that difficult to believe.