The "they" in that sentence refers to "infrastructure organizations", not to "engineers".
The post then points out that hiring Product Managers is not a silver bullet, and that a wider cultural change where engineers talk to end users is required.
Which seems to be pretty close to what you're arguing for.
Yes. The article is indeed talking about a pretty specific subset of companies.
"Adding product management to more traditional software infrastructure organizations, sometimes with a shift towards platform engineering, is all the rage today."
The post then points out that hiring Product Managers is not a silver bullet, and that a wider cultural change where engineers talk to end users is required. Which seems to be pretty close to what you're arguing for.