That should be expected as it is a natural principle. Most projects are dead because of poor management by the team members because they lack the expertise in crypto and failed to seek for counsel from experts. Also, projects with no backing product or tangible ideology behind is likely to go down the drain as it will lose the interest of potential investors.
I agree with your thoughts, apart from SCAMs there were many weak ICOs that had raised enough funds during the peak of hype around crypto and failed when the market changed the direction. Only the projects with a strong community around and with a decent MVP will succeed.