The downside mentioned by the author's replacement in the article is the unfortunate explanation for why this is rare in practice.

> "but that’s a lot more work for us."

And it's not that any individual or team is lazy. Most teams have a constant barrage of priorities to balance and are paid by companies valuing efficiency over everything. That said, I think the article makes a great case for adjusting our prioritization. Going a bit slower won't kill anyone, in fact doing so will probably save some.