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
What you're saying is true, the best coin to hold at the moment are those coin with real use cases and with big supportive community, i invested in one of the best blockchain project in space the
https://ilcoincrypto.com/ which i can say is one of the best altcoin to hold for long.