Earlier quoted context omitted.
Market cap is not worth for a currency. There’s incredibly limited liquidity in the market relative to the market cap, and even the ETF trying to list recently showed 95% of all volume in the crypto space was fake. Try and pull a few million dollars worth out and watch what happens. It did just plunge 33% on some small withdrawals, what exactly are you waiting for?
Selling a few million dollars worth of bitcoin would only slip the market a couple of dollars if at all. Go look at bitmex or bitfinex's order books - they have plenty of liquidity.
[1] https://www.forbes.com/sites/cbovaird/2019/03/22/95-of-repor...