I agree that Bitcoin forks are altcoins and the same context from my thread applies, when I say you should only hold Bitcoin, I mean only Bitcoin and nothing else, not including Bitcoin Cash, Bitcoin Gold, BSV or anything else.

Whilst there are metrics out there for dead coins (no market cap or no liquidity for trading), a coin may still be alive and traded regularly, but still I don't think any alt coins should be in someone's portfolio. Alt coins are created to make the owners wealthy primarily, or become highly centralised and governed by organisations with selfish intent. The only one free of this is Bitcoin..