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How could you say that a trend when most of them are started to delist in major crypto exchange,
The
most privacy centric coin Monero is still listed on most top exchanges but if ever these CEX would bend to the demands of regulators in delisteing them, DEXes like
Bisq,
BlockDX and
XLite will gain more popularity.
Mind you that these privacy-invading regulations is also the one reason why these coins are gaining more popularity.