This is the same burden a person would be under if a police officer simply noticed someone on the street who looked like a wanted suspect (without computer assistance). I agree that the automated system makes this situation more likely to occur, but it has always been the case that you can potentially be arrested because you look a bit like someone else. And in that situation you would have to do your best to convince the police officer that you were in fact someone else.

That's generally why you're only required to provide ID to police in the US (at least in a car. Don't think you can force anyone off the street to show ID). The right to remain silent, or to deny entry into your home cannot put you on a Arrest list.

Of course, all this assume US police have consequences for breaking the rules. So this is unfortunately moot.

No difference at all from the US here. If a police officer in the US recognizes you as being someone for whom there is an outstanding arrest warrant then they can arrest you. And of course, they could be mistaken.

You act less arrest warrants these days stop the police from arresting someone. That's part of the problem.