as someone who has taken a few hundred flights outside the US in the last years: people get to take their shoes off quite often, but mostly boots and worker's shoes, not sneakers.
Sometimes they also ask you to take off a hoodie or such clothing, of course your belt, put your laptop separately from the rest, get an occasional pat down, and the liquid restrictions ("don't take that mysterious bottle in here, but your totally oscure laptop battery and the liquor we sell inside is ok"). Also, check in usually closes 45 minutes before departure so you _can_ do online checkin with most companies, but if you have luggage you still need to e at the airport one hour early.
Still, the american process is heavier, but nowhere I've been in europe and asia there is a process as simple as getting on a train (get there, jump on, leave).
EDIT: possibly it's a function of the airport traffic?