Not GP, but for me the phrase is referring to the idea that everything needs to be professionally administered like an enterprise business (e.g. government, colleges, etc.) with organizational structures that reflect that. It typically values process and procedure over curiosity and innovation.
This is a cultural plague in pretty much all activity these days. Even in the age of memes, influencers, and user-generated content, everything has been professionalized,
Professional sports has overwhelmed real amateur leagues. The Music Industry has displaced a lot of just getting together and singing badly. Wedding planners, summer gap year planners, even professional Christmas tree decorators. There are few roadside restaurants that don’t basically reheat something delivered frozen by CISCO. Random roadside motels and amateurish amusement park attractions have vanished in the face of chains. Even tinkering happens at a high level.
Sure, all the non-professional things still exist, but are a miniscule fraction of how they used to be.
I was more talking about the cultists themselves, and what sort of person becomes a professional administrator (hint: very few have ever actually directly built or accomplished anything more complicated than assembling a piece of IKEA furniture, and most of them even have to subcontract that). The collective noun for cultists is cult, hence my words.
Their collective delusion is that a business or other effort can be administered without actually understanding what it is and does. This is lethal to the business.
That said, an actually good, down-to-earth professional administrator is worth their weight in platinum. These types are very, very rare.