I like how you pointed out, that not every crypto currency will survive. Beside the scams, a lot of them have in my opinion no greater use on the long run. Mostly they show that it can be done decentralized, which in fact is really great, but doesn't represent real world needs. I don't want to judge any specific coin, but no matter what, we will not have thousands of different coins for our lives in different situations.
Thank you for helping others to learn the difference between these types.