Currently on the coinmarketcap site only about 1590 projects compared to at times more than 1700 projects. They have left many projects without developers or scam projects. I personally invested in some of these projects and lost a lot of money like bitconect and centra. Do you trust the projects you are investing in and will keep them for a long time until they succeed or are they just looking for profit in the short term?
Market condition is not good and perhaps they don't have enough preparation to launch ICO project. I still trust the project but I have rules and limit to keep my asset safe and get minimal risk when enter the market. This time join project is not good, leave it and replace your money into currency. Wait and see but never lost faith with crypto.
I quite agree with your analysis of not enough preparation. Some examples of project that were not adequately prepared and as a result failed are Family token, Titanium, SNB just to name a few. But on the other hand, there are many projects that succeeded and are in fact doing well like Haven, Blockmason Credit Protocol Token and others.