They have to stamp them because of the 90 day rule. When ETIAS kicks in then we'll have our 90 day start date/time recorded electronically, but you'll most likely need to get out of your vehicle to do retina/face scan etc., so expect more delays Your post at #3 is incorrect, it was the British immigration services causing the problems this time.Absolutely not my experience in France ( St Malo) last month , French Border control were achingly slow , it’s the 21st Century digital age , why do you think they are rubber stamping passports ? It’s childish revenge .