This is definitely bad news when amateur traders find it in themselves the courage to do short sells on Bitcoin. Short selling is a form of betting against Bitcoin and this does not bode well in the coming months.
What happened to "buy and hold, and buy the dips"? Do you not believe in the technology anymore?
You are right about everything, except for calling them "amateurs". I disagree on your use of the word here. Here goes my thought: if you really are a specialist, you should have predicted what happened. It was quite obvious bitcoin would not go from 1k USD to 50k USD in one go. There are people that actually make money from the market. They are not holding. They just keep buying and selling constantly and taking "small" profit from each buy-sell loop. They definitely make more money than those who are holding while complaining others aren't. I don't belong to either side right now. I don't own any bitcoins.
If everyone buying bitcoins believed it would go to $50k in one go, it definitely would. But it seems this time they didn't even believe it could reach $3k, since they started selling before that, making the price quickly drop again. That's how people are. Only a few intend to keep their bitcoins forever. Most of them just want to make some profit, buying and then selling them back at a higher price. I don't know which group you belong to, but if you are part of those who intend to sell it at some point (even if it's at the $100k/bitcoin point), then you fit into your own definition of "amateur". Those who actually believe in the technology shouldn't ever sell their bitcoins for fiat money (unless they are in desperate need of such money).
Btw, I once did believe in the technology. I don't anymore. There is absolutely no decentralization when only a few huge companies have enough power to process transactions. Blockchain just doesn't scale. I won't believe in any of those technologies until I see one that can either handle at least a million or so transactions per second (with much lower fees than we have today) OR can actually scale proportionally to the number of peers in the network. Having said that, I do believe bitcoin is an easy way to make lots of money, but the blockchain technology just can't handle all the transactions in the world, so it can't replace centralization yet.