Indeed, which is why, I imagine, the whole riding the gate thing started - because it's logical for a full length boat. But most boats these days aren't, I suspect most are about 55 foot and a fair few, like mine, are much shorter, when, I think, it makes little sense and carries a greater risk than tying the boat up. Other opinions are available and equally valid (except, of course, that I'm right and everyone else is wrong...).
Like everything else with boats, it's up to the individual who knows the boat and what they're comfortable with. What's dangerous is to imagine there's a universal best way, or, even worse, a "right" way to do stuff.