what is immoral about placing a low bid?
You are spreading panic and suggesting people they should sell. I often lost money because I listened to some "guru´s" here.
Every transaction has two parties, a winner and a loser. So, there is no good or evil in this realm.

Not really. It can have two winners. I bought at 300$ and sell for 600$, because I want to buy a camera. Then the prices rises to 900$, like you predicted. So buyer and seller win.