Many of those alt coins that do not work well or projects that do not come true are seen at the end of the day scam. They should be real projects and coins for many years as a top coinmarketcap and must be invested well. Should be verified and invested.
The projects with real working products will be considered by the crowd but the scam projects will continue to scam as much as possible sufferers. Invbesting to the proper projects have some requirements from each investor. An investor should understand and accept the risks associated with the volatile financial markets.