The mentioned "portfolio income" is still passive income. "Earned income" is synonymous to active income (Passive vs Active). I think the reason they wanted to classify separately as "Portfolio income" which includes soft investments (e.g cryptocurrency) is because risk may not be the same as the traditional ones. For example, your crypto portfolio does earn you crypto; however, in terms of peso, its value fluctuates depending on the market. This gives you different forms of risk (e.g. currency risk, volatility risk).

For your passive income sources, you can also treat them as a portfolio of business especially once you get to build more. I wish I could start such passive investments like you did. Will check out more on your future posts. :)