Add to it the lack of common space (as it was a frontier colony and we hadn't invented malls yet) and you ended up quartering soldiers in any place that people could meet, preventing them from being able to assemble and talk shit on England.

Real talk: a militarized police force is what what the third amendment was trying to prevent.

People can get together and talk shit.

People can police themselves, and should.

Barring a war, the government can't just come in and occupy common spaces and monitor people.

The government can't just inspect people willy nilly either.

The government can't just force you to confess stuff.

They didn't just make this stuff up, they were trying to prevent real problems that had occurred that people could remember and led to a revolution. Something said revolutionaries were not interested in repeating a few years later.