It is the em dashes and the excessive wordiness as well as a lot of "not this, but that".

Eg:

"Not dramatically. Just quietly. " -- This is filler words. Whether it's dramatic or quiet has no relevance to the point they're making.

It also loves threes: "Well-modelled, properly sourced, beautifully visualised to requirements" - again, all irrelevant. The point they're making is that it's measuring the wrong thing, not that "beautifully visual things can be incorrect".

"There’s a piece of this conversation that most leaders miss, and it’s the part I care about most" - this hook of "most people miss" it is very common in AI writing.