"I hate the way this vendor does things, but I'm locked in and can't leave" is vendor lockin.
Google can offer this because you are using a single, fairly unified, ecosystem and they own both your account and browser. However, this ecosystem does not offer interoperability so you are effectively locked-in.
Ironically, this feature is exactly why I can't use Chrome or login on accounts on Android applications: this will auto-sync everything and log you into Google, make logging out very hard, enroll your devices on Google Workspace if that's a professional account, ...