I am not prepared to go into details mate but, you can take it from me that BK has had some serious health issues in recent years.
And at 77 years of age, it's not an unreasonable assumption that he may still be having issues.
Should he have stood down from his position as Chairman due to ill health - in my opinion, yes he unequivocally should have and should do now.
I am no fan of BK as Chairman of Everton Football Club but, from a humanitarian standpoint, he should put his own health first but, it's his surrounding himself with people of such poor quality and incapable of running the club that is probably the reason he remains in situ - wrongly in my opinion -misguidedly thinking he knows best.