As mentioned several times about Henry's stiff backbone on ideas that were anything but his, reading the history of the flathead V8 it was interesting to see this played out.
The old statement, "if they want 6 cylinders, I will give them 8!" sounded like a battle cry.
When he was working on the V8 prototypes, he wanted it to run like a A Bone 4 Banger, no water pumps, no fuel pumps. It took alot of arm twisiting from his son to ad those items.
I imagine it could be hard, if we were in his shoes at times, to have built up such a successful company on your own ingenuity and effort. You seeming seem like you have all the answers and were usually proven correct. I think in some ways he was living in the past on what the public wanted in cars as time went by.
And as pointed out in other replies, it took a miracle to get him away from making T's.