This is why premoving is lazy and bad. lol

i'm not sure this example really proves the claim your making.

That's quite unfortunate. my condolences

While this is quite unfortunate, it's a niche edge case in the grand scheme of things. Is life saving medicine bad if a patient has a 50% chance of dying without it and a 1% dying with? You could point to the many deaths of users of the medicine, but that doesn't make the medicine conclusively bad.

If you play an ultrabullet game, then you have to premove at least once or twice.

@Riko2020_chess very likely more than once or twice(but if you're a serious ultrabullet player you can't premove the whole game or you'll just get mated)