Pretty simple. If you actually like the project and want to invest in it, then go buy in. And sure, it could drop down, but if you actually think it's going to be worth a lot more in the future, then what's a potential 10-30% drop?
In a trading sense though, it's pretty much a gamble. I'd say close to 50-50 in a sense that you really don't know if early investors will dump or not, unless you have the connections.
What are you saying actually makes sense, but I was talking about an intraday trading opportunity, and I've noticed something very interesting (let me know if it could work and if it's correct): theorically it is "impossible" for a coin to instantly dump in its first listing hours, just because you can't sell a coin you don't have.
Then we have the case of a coin that went through an IEO, so many people already have the coin, but the majority (unless we are talking about a shitty project) of the projects plan a vesting schedule, keeping the money locked, for a certain period of time, in order to avoid such dumps.
I'm saying this because I was checking out all the recent listings that occurred on Binance, no instant dumps (I'm talking about no dumps at the very beginning of the listing, obviously the people, once they bought a the start, are gonna sell, so the result is a green candle with a very long upper shadow with no lower shadow) in any of those.
Does this make sense for you?