As long as you give people choice you don’t have to worry about change.
Look at Reddit. If they hadn’t killed the API myself and many others would still be there. I used Reddit is Fun for 10+ years. Reddit made hundreds of changes, many of them stupid, but I didn’t care because no matter how many changes they made I could choose to ignore them and use the exact same client/UI I had been using.
Also Lemmy and Mastodon have plenty of good UIs in the form of apps. If you want to change the default UI I say go for it, just provide the old one. If you don’t want to maintain the old one, don’t. Just give folks to the option to maintain it.
Based on https://www.theverge.com/2024/11/14/24296537/bluesky-acting-up-outage-down it was down for 15-30 minutes and for some it was just read-only.
Lemmy instances regularly go down for maintenance longer than this.
Twitter used to regularly “fail whale” and in the long run no one cares.
Yes, decentralizing is a good thing. Yes, it’s fun to poke at BlueSky. But in the long run if you have a product that people want to use then they’ll put up with a lot of crap/downtime.