Sacred Haven of Debauchery

THE MAIN ELEMENT IS MOVEMENT

Is this written on the game box? And in Heroes, is the "main element" hit-and-run tactics from invisibility? And in strategy games, is it sneaking up from a distance to attack with a squad?

by default, a losing tactic, I don't think that IT'S WRONG, I'm just annoyed by this type of gameplay (even if it's flawed)

Pure subjectivism. The tactic isn't losing; it's perfectly viable. With your biased dislike, you're only consciously impoverishing the game by believing that certain playstyles are ineffective and "shouldn't exist for normal players."