I suspect that it's this little parenthetical tidbit, and implicit disagreement with it (or differing definitions of "much") that drives the creation of this kind of abstraction.

In some situations, I consider the gap to be legitimate, where it may be easy (not that much work) for an expert but difficult for everyone else, and, more importantly, becoming expert is non-trivial, even with training/mentorship from one.

In other situations, I consider the gap to be merely one of perception/misestimation, either because it would actually be relatively easy for a non-expert who had actually tried, and/or the needed expertise is shallow enough that it can be quickly taught.

I believe autoscaling is (or at least originally was) of the former category and that the availability of tools and abstractions around it has allowed a broad number of non-experts to leverage the wisdom of a much narrower group of expert practitioners.

OTOH, I believe running hardware in a datacenter (as opposed to outsourcing it to a VPS or even cloud) is of the latter category. I routinely read comments like "have to hire 5 sysadmins" from non-experts when we experts know that estimate is around 20x too high for a scale of hundreds of servers. Even at higher scale, if hiring is necessary, the hardware-specific skills are easily taught, so junior staff is fine.