He has his fan boys here on FR.
He is bitter towards his own country because he thinks he got short shrift because he was not promoted to Brigadier General. He is a spiteful, vindictive little man.
He retired from the Army in 2004.
That’s an awful long time to hold onto a grudge about a promotion.
(But seriously, what evidence do you ha e that Macgregor’s views on Russia-Ukraine are tied to not getting promoted to Brigadier General?)