No need to buy new coins. Investments in such projects are very risky. It is much better to trade coins that have been on the market for a long time and have shown their best side.
Agreed. Success rate for new projects have dropped to all time lows. On top of that many of these new coins are either heavily manipulated, or very overpriced. As of now, there is no reason to go after these coins/tokens, when the established coins are giving good returns. Investing in new projects right now is just like gambling, and it is something that I would avoid for now.