Software long ago had a. “ one log in at a time” subscription, I could see Netflix do that, I just hope whatever their enforcement /detection scheme is that it’s relatively good so regular use doesn’t get tangled in some security nonsense.
Lines that go away once the startup is complete? A tiny bit of distraction but otherwise…
I do get it though, it’s out of the ordinary so is the iPhone going to unexpectedly fail since it’s got issues? people get used to a certain pattern, odd changes to such an important device and they worry.