You can lock the bootloader again after the flashing process is done(because it will add the signing key of the new OS), but unfortunately the NFC Payments in Google Pay still won’t work because Google only allows it on ‘certified’ Android systems (aka only the preinstalled OS)
Personally I wouldn’t mind a few preinstalled apps, if they can actually be uninstalled, not just disabled which seems to be the case for some.
But the “Meta Services” thing seems shady af, its not showing up in the app drawer because its just a background service most people don’t even know it exists. Its also not needed, because all of the Meta apps work just fine without it. So realistically Meta just pays Samsung a lot of money for something that only has the purpose to collect a lot of user data (it can also access more data than regular apps because it’s installed as an system app)
There is still a lot of stuff preinstalled which could be considered unwanted by a lot of people (TikTok, Netflix, Spofify, multiple MS apps, Disney+, Facebook, Meta Services, …)
Yes, afaik LineageOS shouldn’t be locked, but I was talking about GrapheneOS specifically because @[email protected] was talking about that.