That’s annoying! I’m using Graphene and I just installed KDE Connect from F-Droid to test, which didn’t trigger, however it did bounce me for using Heliboard. Changing to default keyboard and reloading worked, ie it can only see my currently active one.

Using Shelter to set up a second profile, or the new Private Space feature on 15 may help provide isolation.

Halifax/ Bank of Scotland/ Lloyds does an integrity check that rejects Graphene or LineageOS phones completely.

Not OP but fully agree - I don’t enjoy video content so my personal block list would filter youtube.com and any of their shortened aliases like youtu.be and I personally would also filter x.com as if you accidentally click it you’ll likely get the you need an account to view this nonsense