Totally agree with you

The only thing I want to emphasize is number 3

3.HODL Only Altcoins With Real Use Case

There's no better tip than this one, people and devs write some beautiful whitepaper, launch a coin and try to sell to another people, but they can't asnwer the simple question: What problem you coin will solve?

They only want to lauch a coin, not solve anything, so it's not valuable in a future