It’s not about what you post but what data will Threads/Twitter/FB apps will trick you into sharing on system level (location etc).
The Verge peeps are rather enthusiastic about Activity Pub based platforms, I wouldn’t attribute bad intent there.
Linux is used by most of the world but it’s either backend where techies take care of things or super streamlined experiences like Android etc.
I knew this part would ruffle some feathers since whomever is reading it here is probably on board with Lemmy/Kbin.
I do think that for many it’s too early but there’s now significant interest into making everything a bit more stable and streamlined. I think Mastodon is already there but it is suffering from bad rep from their own waves of migration. I’m a bit worried it’ll be the same for Lemmy.
Don’t know about Android but on iOS health information is something that an app can request on OS level.
There are valid uses for this, for example hearing level measurements from third party app can be added to Health app and then used for adjusting equalizer for AirPods via accessibility options. Or your menstrual cycle (although that probably won’t make your AirPods sound better) or many other data points. This is what Threads is trying to access.