I am not sure your assumption that most young people in tech have parents wealthy enough to own multiple properties is quite accurate... I agree that it’s a great idea, but I suspect many may not own even one property.
Here in Palo Alto, the parents of most of my peers have had long careers in medicine, law, finance/banking, or have international family wealth. There's always the odd person who comes from a more limited background, but for most of us, software engineering is actually a bit of a step down the traditional prestige ladder!
consider yourself part of a very exclusive and privileged minority, even if your local bubble might suggest otherwise.
+1 "Here in Palo Alto" is the definition of a privilege bubble.
Translation: Your entire social group is stonking rich. Which is nice but not really the target audience for the article.
Then the article should talk more about getting a place to live, since you have to be rich to own one, and not having one is a major existential risk. Homelessness is way too common and vastly limiting. And the estate is a major investment. Easily matching or exceeding the FIRE target funds.
That is, indeed, what I was trying to hint at to the OP. The reply illustrated the bubble quite profoundly :)
Depends where you live. In Australia it's pretty common for people in middle age and later to own investment properties (or maybe that's just my bubble...)