The way I see it. The technical points have been explained on their GitHub page. One might not agree with it. From an organisation's perspective it makes total sense. You need in house expertise and you need a free hand. Not many languages would have fit both of these things. I mean if it were you or me, wouldn't you pick what you are most comfortable with given it fit the constraints?

Linux support for this can't be sub par since the whole stuff will run on linux like 99.99% of the time.