Oops my apologies, lol I checked and I must have installed the upstream NewPipe repo so long ago that I forgot that I even had it in my sources list. Literally my only repo other than Fdroid main.
No reason not to use it, though, it’s the official NewPipe repo:
Some of the concepts in this book really stuck with me, but I had no idea what the title was! Thanks!
“Some days you’re the original, some days you’re the copy” or something like that