The only catch, and what I am sure he was demonstrating is what "almost" happened to me and just something to be aware of.
In May of 2001 I moved to Clarksville TN and bought a very nice house in a very nice new subdivision. I paid $150k for the house. ($232,466 in 2021 according to CPI data). Then 9/11 happened.
Not only did we have a serious economic crisis but being a military town, there were a lot of shakeups in people leaving/coming etc that seriously depressed the housing market (and had the potential to have been much worse). So the house that I purchased for $150k was suddenly worth significantly less, but my mortgage was still for $142k (5% down with PMI). So I was in a job that I hated, that was in jeopardy, with a house that I owed more for than I could sell it for. This was not even considering the 6% closing costs that I would have to pay to a realtor to sell it.
The first few years that I was making my payments, very little was going to the principal of the loan. Instead, I was paying exclusively interest.
In effect, I was "renting it" from the bank for the interest payments and wasn't building any equity at all and wouldn't for several years.
"Luckily" I was in the house/job for 7 years, which wound up being enough time for the market/economy to recover enough that when I sold, I did not have to take a haircut and luckily got out selling it for $185k minus my closing costs but I still owed the bank a significant amount of money because even at 7 years in to a 30 yr mortgage my payment was very biased towards interest over principal. A few months after selling the even bigger housing crash of 2008/09 happened. If I had waited just a few more months to sell, it is very likely I would have owed money when I sold the house after paying closing costs.
Over a long period of time, it definitely makes more sense to own than rent since you "earn" the imputed rent that you don't have to pay once you have your home paid for. But there is a point that the rent vs own intersects and normally, in the short term, you will be better of renting than owning. If you have a stable job and you plan on staying in the area/home long term, you absolutely should buy. If you job is unstable and you may be transferred or you may decide you don't want to live there in less time that it takes to make that intersection point, you could very well lose money, sometimes A LOT if we hit a major rough patch in the economy/area.
But you have to roll the die either way.