There are many people who may understand how to trade but they spread several assets. So when one coin goes down they still have a chance in another coin. But this also does not necessarily give us passive income because the market talks about coins that are always fluctuating.
It's not passive unless you're doing something active to participate for you to be able to learn. While it can be said as a passive income because you buy and wait until you sell, it really comes handy when you'll make some profit and describe it as a passive income.
It's true that any investor have spreading their assets somewhere else for them to have a larger portfolio.
And that is because we do understand how it is important to rely on many assets that will save us in the right time.