Why do cryptocurrency exchanges delist some altcoins?
- Small volume
- Useless altcoin
- Turned into a scam
Beyond this there is a possibility of conflict of interest as a factor that can make a exchange delist or when the project team refuse to settle the exchange well after listing their coin. But delisting a coin do not mean the coin will die. I have seen delisted coins perform well on other exchanges.
It could be another reason, whatever the reason and conflict that lies between the dev and the exchange management that lead them to have miscommunication then they would be forced to delist it.
As for those coins that has turned to a scam, most of the exchanges that has that coin delisted it. I've seen a coin that has been delisted to all of its exchange where it has been listed so that factor is for real.