The TL;DR is that the value of renting vs. buying has a lot to do with being realistic and understanding real estate and investments in general.

Buying a house is often an emotionally motivated decision with many important risk factors... Were inspections comprehensive and thorough or did they overlook an issue with the foundation, wiring, plumbing, etc.? Did the buyer understand the required disclosures, and specifically understand what the seller is not obligated to disclose in their jurisdiction? (e.g., in many areas the seller is not obligated to disclose if a child sex offender lives next door). Is the neighborhood up and coming or struggling?

Getting these wrong can easily negate the potential upsides of ownership.

Renting can also be great, but as the article points out, if it mostly just results in more disposable cash, then you may be better off owning (forced savings). Rental properties often cannot be sublet and also cannot be used as collateral or passed on to family members with a step-up in basis. Rental leases also fluctuate with the market, so it's not uncommon in big cities for renters to be paying close or equal prices of their homeowners next door.

Anecdotally I know many folks who have rented their way through, invested wisely, and done well. I also know folks who have moved around the US and always purchased, did their homework, capitalized on tax incentives, and now have a stable of rental properties that helped them become FIRE.