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?
fraud and scams are always there in any industry so it is our responsibility to filter out those projects and focus on long term and slow moving projects unlike to those easy money projects because the real deal is there.