This is why it’s a great idea to refuse to install everything that’s possible, including smart switches, cameras, lights etc. that rely on the good will of some company to keep running.

Even then you can get fucked over. I've used Hue smart lights for years, and back when I bought them, you didn't need an account to use them, just an app and network connection. Years later, they forced an online login for the app, requiring you to be online to interface with the bulbs. You can kind of work around it with Home Assistant, but you still need the account now to add the bulbs, and I don't think scenes work without an account either now.

Plex wants us to log into their servers to watch content we're hosting ourselves.

I hate Plex as much as the next Jellyfin user but you can just whitelist your local network, although people who understand that aren't the target audience are they? ...