For now, this is true. But those forks get updates from Tachiyomi (changes in Android / security fixes / feature updates / bug fixes) so they need a new base.
It seems important to follow the Mihon rebrand. Some forks, SY and AZ, announced they will rebase off Mihon (it’s in the #faq of the Mihon discord server https://discord.gg/mihon)
Good point about SPOF and backups! Thanks!
I think using the same extension for all mangas is ok if you get some backup extensions to migrate the manga you’re currently reading at will. The ones you listed in another comment are great.
I’m usually reading one manga at a time + the ongoing ones when a new chapter drops (via notifications, which is my initial need of Tachiyomi). From my personal experience (which is technically riskier than your suggestion, but more comfortable) with mangalife, in the 3-4 years I’ve been using it, having to migrate due to outage was fortunately not a problem.
I’m using mangalife almost exclusively (18 ongoing, 50 done) and it works perfectly. Always has everything from chapter 1 to current chapter of any manga, in good quality and with great English translations. Highly recommend and no NSFW (use specific extensions with incognito mode for that)
Sarcasm is pretty hard to detect. I know it’s not as fun, but adding /s helps readers get the intent ;)
Never tried it but found this while searching for “delayed email service”
https://lettermelater.com/