Yeah, and those people made out like a bandit when they rebought at $6 and $100, and if we're ever at $xxxx (I say "if," not "when," because I don't know about you, but I'm not a psychic), the same people bragging about buying at ATH will come out of the woodworks, start shouting the same thing about 100k coins, and then holders should be worried again.
The point is that most traders lose money. The forum is littered with people who sold early and wished they hadn't. There may be a very select few who have sold at near a peak and bought in much lower. It isn't the vast majority of the bearish posters on here who simply wish to buy at a low price. I would say buying at a third of the previous ATH is a decent entry.
Most traders lose money because most traders trade with emotion. If most traders lose money, shouldn't you be betting against most traders? During the last bubble, most traders were shouting "TO DA MOON," and when that happens during what has already been a huge run up, and the greed factor is at the absolute maximum, that's when you should start worrying.
The forum is also littered with people who bought at 30 during the run up to 32 and are happy with their profit, when if they had shown a little patience and didn't let emotion get the best of them, they could have waited until even $15 (let alone $5 or even $2) and doubled (or more) their profits.