Based on his past statements, he probably feels unworthy to kneel because he isn’t black enough.
That is likely.
Alternatively, it also is possible that this has gone too far even for some of the leftists. Of course, they lack the courage across the board to say anything about that, so they I'd still damn them all.
He’s probably got bad knees.
THIS!
Yes, he is one weird Commie millionaire.