I thinking about this case: private coins will be delisted from centralized exchanges and they will be trading on "dark exchanges" like someone says, after the panic caused by government blocking, coins like monero will become scarce commodity and difficult to buy .
Who said that? Could you please give everyone here proof of what someone said? because almost everyone knows that coins like Monero are in a good line of coins regardless of the problems that befall them.
Actually even I don't have any credible source but the exchanges are controlled by SEC which is ultimately controlled by the government so there is a good possibility that any asset that is too private or untraceable might face some problems from the SEC and hence might be de-listed from exchanges. Consider how XRP was dropped from a few exchanges after they had problems with SEC, so maybe that's what playing in others' minds as well as mine.
I don't think there is going to be too much problem with either private or normal tokens because now we are seeing more and more decentralized exchanges which ultimately removes the government interference and looks like the way moving forward. I just hope the fees problem on the ethereum network is solved soon because otherwise, exchanges like uniswap will suffer a lot.