It's purely tactical but it doesn't work against good teams. And to be fair if a team is passing around the backline for long periods the fault is with the opposing team for preferring to defend deep and not do anything about it.

What?? Keeper can't use his hands if u pass it back to him. It's not that hard to put pressure and close down really. Just push the strikers and wingers further forward if they insist on passing around the backline. Either they get caught out or they'll be forced into clearing the ball. Besides if this was a real issue u would see it happen more in top level games but that's clearly not the case. There's only once I have actually seen it happened and the game involved the Malaysian national team

But he's absolutely right. Composure and confidence on the ball is crucial for a defender. A forward doesn't really have to worry about a miscontrolled ball; he is closer to the opponent's goal after all.