How could you say that a trend when most of them are started to delist in major crypto exchange, IMHO, I consider it as uncertainty on the part of those Privacy centric coins, Because the truth was US government dont like their "superb privacy features," and the reason is simple they dont have the capability to trace those transactions if the advance and powerful nation like the US cannot trace those transactions what about those other countries that less advance? I believe for that particular reason many countries especially in Europe will follow the US action against the privacy-centric cryptocurrencies. Let me clear my position I'm not against the proliferation of privacy coins in fact I was also using Monero since 2017 I'm just pointing out my opinion in the recent move of the US government against Privacy centric cryptocurrencies.