I've been going through the process of backing up my saved Reddit posts. It has been a long ordeal as I have been having to check back in regularly to see if new posts have unprivated themselves.
Unfortunately, only a few months before this whole fiasco, I gave into the temptation of "hey, Reddit has a built-in bookmark function, why don't I use that?" ... Good grief. I learned a lesson. (This is also why I am moving my hundreds of collected YouTube videos to my website.)
I'm the only one out of my friends that's actually bothering to migrate, I suspect because the explanations of how the sites work are just too confusing, but Reddit Migration has an updating list of subreddits that are moving. I have an established personal distaste for the Fediverse, so I'm surprised this is what has gotten me to return, but I just hated Twitter in the first place and didn't want an even more Twitter-y Twitter; an even more Reddit-y Reddit is fine by me.