I see alot of altcoins and tokens been introduced into the market every day and I keep wondering if that is how this industry will keep growing. The number of altcoins does not translate to increase in the over all market capitalization of the cryptocurrencies market and it that means that some of the coins we currently have in the market is not needed!
The crypto industry is just developing, even mass adoption is just starting, The number of tokens that emerge will not affect the crypto industry globally, if you are worried about useless tokens then don't buy tokens that are just hype or trend following, you just need to focus on coins that are has top 100 market cap ranking on coinmarketcap. After that, research the usefulness of the coin before buying it, investor knowledge is needed before buying a coin.