Yes. Investing is passive income. If you have $20M and your lifestyle requires no more than $800K/yr of income taxed a waaaaay lower rates than the working stiffs pay on the same, then a 4% return more than suffices to live off of income that is waaaaay more passive than most passive income frauds even come close to promising.
The difference between "investing" and "passive income" is mostly just the difference between blue blood and the new rich. A tale as old as time.
Working men of the world uniting would be an utter disaster, so instead they're persuaded at any cost to choose sides in this absurd dichotomy between two sets of do-nothings.