you are mainly using this article to exaggerate things and even spread some FUD!
this has been happening for as long as bitcoin was around. not everyone trusts exchanges or wants to use them. they prefer a more decentralized (peer to peer) way of trading bitcoin. it may also sometimes be because of taxes.
So in December, when common people sold houses and cars or took loans in the bank and bought bitcoin during its unprecedented growth,
you say this as if it was a thing! maybe someone was idiot enough to do something like that but it was not a major thing. most people invest more responsibly than that. some always take dumb risks.
bankers quietly sold all the bitcoins out of the exchange at high prices,
this doesn't even make any sense!
but when not over-the-counter areas were over, they came to the stock exchanges and the remains of bitcoin were already sold on open exchanges, causing a price collapse.
i call conspiracy theory at best. the drop would have come anyways because of the bubble at $20k and whenever a big drop happens and weak hands are flushed out for good the prices drop more like this. it is inevitable and doesn't have to have some evil group of people behind it.
If a whale wants to buy bitcoin for $ 500 million and go with this amount to the one of top 5 exchanges, such as Poloniex or Binance, he can in one trading session, push the rate one or two thousand dollars up, and that's exactly what he does not need.
nobody invests that much money in anything, not just bitcoin. if you invest $500 million in stocks or even gold in one go, you will change its price significantly! what they do is that they invest slowly and based on market size.
and by the way neither polonies nor binance are considered top when it comes to trading bitcoin. they do NOT even have a fiat market!
What are your suggestions??? I think the only way is just HODL despite the fact of price collapse.
not a good suggestion. there are a lot of options when there is a big drop on the way. HODL is only true when price reaches the bottom and you are too late to do anything else. other than that the dips are a good place to make a huge profit and increase the amount of bitcoin you own.