If you got a lot of money to invest in coins then better be sure and learn to do some research for it and those the best of the best and has potential to keep on growing.
It makes sense, it's all about putting many eggs from different baskets and you will get an advantage for doing it.
It's not crazy, it's a normal thing that most of the traders and investors are doing.
Your point is good, don't put all eggs in one basket, and we need to invest in many projects, to decrease the risk, and to get more hidden gems. All-in one project can be very profitable, and also very risky to be broke. Overall, investing in many projects is always a good habit.
It's normal that we shouldn't put all the eggs we got in the same basket. But that's another risk, the more projects you are going to invest.
The risk will be a lot of higher and the time that you are going to allocate with it is going to be another factor.