Now Reddit are coming for the individual personal subreddits

I'm guessing this is an automated message that was sent to all the subs that went from public to private in recent days. And there's no easy way for it to tell whether a given subreddit is "personal".

I havent received that message and have a personal sub

Seems like it; I have a personal subreddit the same as my username that I flip between private and restricted to post music videos I grab with an iOS shortcut (can't post video on private subs) and the same landed in that accounts inbox (2) days ago.

My other private subreddit for Wikipedia/github links has never flipped/flopped and it didn't get the same message.

Among other points, I'd raised the issue of distinguishing personal subreddits years ago in a post to which a Reddit admin responded directly and pledged that they'd honour my request in that regard:

<https://web.archive.org/web/20230612102634/https://old.reddi...>

(OP, FYI)