My opinion , Crypto coin market should clear those untrusted coin which is scam or those is unable to move on.
we need something to clear those coin. Am i right..
The bad/weak/scam altcoins will fail and disappear on their own in the free market. The best cryptocurrencies should rise to the top and the bad ones will not be successful. I dont think there is a need to stop innovation by banning new coins. It will happen organically. Just let the free market play out and for your personal investments, do good research to pick the ones to buy.