The "real life," cashflow for me has been a decade + journey especially when you're referring to consistent predictable cashflow spanning an accumulation of purchases of apartment units.
I never really made any money in excess of capital contributed such that I would deem it any decent rate of return ( IE I have min criteria of 8% cash on cash and I was making less than this) till about year 2-3 or after on each real estate property. These were mostly 2-12 unit properties so smaller MFR's. The initial year of each purchase was always a series of capital contributions to get it up to speed or get it going. Of course there were properties which cashflowed day one albeit a lot less than my proforma but I would still have to do lots of work.
I would preface I was buying class C to B- type of real estate 1900-1980's product. The older the product the more the capX generally required to get it up to speed from studs out renovations to basic cosmetic upgrades.
The OP posts that getting into real estate for cashflow is "wrong." To which Id say it depends on when you bought, how you bought, what you did to the properties CapX wise, and how you managed. Depending on where you purchased the properties a different strategy or approach might be needed to buy for cashflow.
I would also agree a business is much better for cashflow (stabilized, operating well, for on going CF).
Real estate does cashflow well but it wasnt overnight and requires many units stabilized and maintained to keep cashflowing regularly. However "regularly," is not regular either because it can waver up and down quite a bit too depending on how many move out/unit turns you have per month too. I've experienced swings where its 50% less cashflow than the prior month due to a month of multiple apartment turns all hitting at once versus a stabilized month.
In Summary, I would say cashflow works its not easy and may take a lot more capital contributions than you think. However, is cashflow wrong and dangerous for most ? Perhaps, but nothing of value was ever obtained easily otherwise it would simply not be such, valuable.