Yes. It seems crazy because you're so used to it, but I use the train and bus as often as the plane, and there are no checks whatsoever there. I haven't had to show up two hours early, I can turn up minutes before, and walk straight on.
So far, none of the trains and busses I've been on have crashed, exploded, or been hijacked. And funnily enough, it's very rare for any of that to happen to planes - that's why it makes the news if it does happen. Cars kill thousands of people every year, hundreds crash every day. Everybody has been involved in a car crash, or knows somebody who has. So why not ensure ludicrous security for cars? Has everybody forgotten about the truck bomb in Oklahoma?
https://en.m.wikipedia.org/wiki/Oklahoma_City_bombing
What is it about planes that makes everyone so paranoid?