I participated in the cryptassist ICO a few months ago, and I chose this out of the many projects I could have done the ICO, but still no listing.
This is because of the market, but I strongly believe that if the project is good enough, the team should not be scared of listing
The market is in the downtrend period, ETH prices are too low for projects to have enough money to maintain. They are trying to make a hole to develop the project and if the project is not strong enough and want to list the exchange. They will be dumped by the investor and the bounty hunter.