I have taken part in many failed ICOs and few successful ones. After a series of failed ICOs owing to scam cases and insincere teams leading to heavy dump after listing and in turn blaming the bearish market, I have sometimes share in the sentiment of many projects who blame the bad market for their coin heavy dump, but two case study has shown that with a good team and the right strategy, their coin needs not dump to "hell-fire" as we are currently experiencing thereby discouraging investors.
There is no logical sense why they are blaming bear market just like you said. If the coin is really good or the project has potential, the price of it will not drastically go down. You have made a fair point here and I think the same too. I am happy that Binance prove that ICO is still alive