So does it really matter if the prices of ETH/BTC is dropping?
If anything, then buying now you get more Tokens for the $, right?
Some ICOs change their number of tokens when the price of ethereum and bitcoin change but there are some who has fixed price so it is an advantage now if you buy and the price goes up later on because it would mean you bought at a cheaper price but if it would go down then you are at a disavantage because you bought it more expensive. It can go both ways. What most likely happen with some ICOs though is that the price dumps when it is listed to exchanges because many people sold their tokens. If you are investing for the long term then the price of it when it is listed wouldn't be a problem to you.