I partially agree with you. There too many altcoins now and not all of them are useful. Smart people try to develop their new coin, believe that it will solve some problem. But in fact, most of new ICOs are either failing or scam projects. Maybe there should be more strict regulations concerning ICO start-ups, then the losing projects will fail at the starting point.
They can not solve any problems. Cryptocurrency is not even recognized and widely used around the world, so those projects will never be successful and solve the problem as described in the whitepaper.