I think he was an intolerant bigot, I do not think that is all he was
but sadly (and imo) at the time he most needed to not be an intolerant bigot he chose to be one.
He may have been the life and soul of the party, loved by his family and, in his later years, toned his rhetoric down a bit but when he could have been emollient he chose to be anything but and (again in imo)as a result more people died and the troubles continued for longer.
He wasn’t the only one on either side doing this but he was very visibly doing it for a very long time.