Maybe the reason is the average volume of last 4 months were very small, which caused this delist. Accept or not, this is the reality.
The main point isn't whether the decision was correct or not, or whether we agree or not, rather the issue is with how the decision was implemented.
major pumps + late night announcement + crashes in all the affected coins
That's the issue. The issue is the damage suffered by Poloniex's customers. Their customers' best interests were not protected, rather it looks more like they were raped by the exchange itself. Without a doubt, that is what things look like on the surface, and this needs to be documented and followed up on to either confirm or debunk that supposition.
(BTW, almost as an aside since this has to do with the decision itself, what about FLO, GRC, NAV, NEOS, NMC, OMNI, RADS, VRC for example? Their volume seems as low as or even lower than some of the de-listed coins. Nevertheless, this is anecdotal, since the real issue is the damaged suffered as a result of how Poloniex handled the implementation.)
