I am with you on this.I have disabled all features (including Gmail) and migrated my family to self hosting, but you need a Google account/identity when invited

I am with you on this.I have disabled all features (including Gmail) and migrated my family to self hosting, but you need a Google account/identity when invited to some online webinars, for Android phone (unless you want to jump through huge hoops and use Aurora store, but some apps might still not work (banking...)). Unfortunately.