I don’t get it when people (usually chavs) can just sit back with their hands in their pockets - when I try it my handlebars twist out to one side instantly.
Most bikes are stable and a cyclist can weight shift to turn gently without touching the handlebars
Mine is a recumbent that steers with long handlebars. The handlebars prevent the bike from balancing itself.
Yours might have barely stable geometry, or badly placed weight on the handlebars
tf is a chav? This is a thing I do and I’m not from anywhere that has the term “chav”. I’ve seen lots of cyclists do it.
As with regular cycling, the rider is doing microcorrections to keep the bike upright. You can do those corrections with a lot of leverage using the handlebars, or you can do it with less leverage using your core muscles. Concentrate on holding in your core and you’ll succeed. It’s also much easier at higher speeds (downhill, for example) for the same reason that steering a bike the normal way is easier at higher speeds.