> The QAA themselves don’t explain what decolonising means.

Presumably this is a good thing, given the complaint:

> But by requiring that all subject areas include these topics, the QAA is homogenising university teaching and diminishing true diversity of thought.

The 'sinister attempt' here is literally just advice to have a bit of a think about this stuff when you're covering areas where it might be relevant, like the history of mathematics; and to consider the diverse needs of your students. An academic who chooses to follow that recommendation has huge scope to determine how they do so.

The rest is just baggage Armstrong is bringing to it, and is very much his problem.