metronome battles often stalled out, and could easily end up being pp stalled as people would switch out of status drops, with the randomly of metronome pulling a move like screech, the counterplay was just switch, which made a move which should be fundamentally as good as sword dance 100 times worse. While in construction tiers such as ou you can build around switching whilist in metronome you cannot and nothing feels as bad as wasting metronome pp and losing the metronome battle to struggle