I don't think Microsoft do claim that, nor is that really why they did this.
Microsoft is a profit seeking entity that is trying to maximize its profit and goodwill (an intangible asset) at the same time.
Thus for them the best moves are those which:
* Have minimal cost.
* Distract people away from profitable dirty laundry which doesn't attract goodwill (e.g. concentration camp contracts).
* Buy them some goodwill among some people - especially through the mechanism of "outrage marketing" (people who by dint of attacking "the right" when they attack this will naturally defend Microsoft - a bit like how Nike used colin Kaepernick).
They did this because "change master to main" appeared in a local maxima that maximized these three conditions.
This is being reflected all around the corporate sphere because what applies to Microsoft applies to a lot of other companies.