Comments spurred by discussion on a closed discussion board (which is why I am talking about RA Fisher - since it is closed to the web I don't provide a link to the discussion).
RA Fisher was an outspoken person and not easy to get along with. Being difficult to get along with isn't uncommon for people that do great things - I suspect those that are willing to subsume their opinion to make those around them more comfortable are less likely to find incredible breakthroughs.
Of course you can free your mind from the constraints of conventional thinking while being very friendly and sociable and likeable, it just seems to me not uncommon for people willing to challenge intellectual orthodoxy are also willing to challenge the thinking that social niceties are of utmost importance. They would be more able to win over more people more quickly with behavior based on "you catch more bees honey..." but that seems less common.
Fisher also much has achieved a very large amount of long lasting notoriety for his contributions. It is possible he was insecure but and worried about losing it, but more often it seems those with a history of great ideas just find that believing strongly (maybe too strongly) in themselves is better than listening the the chorus of disagreement. When over and over throughout their career they find those disagreeing don't bring much merit to the argument and they were able to make breakthroughs by challenging the accepted wisdom it isn't amazing they often pay less attention to critics than others do.
Of course, just because you have some good (or great) ideas doesn't mean every single thing you say is wonderful (or even right).
For people with the capability to achieve great things the most useful breakthroughs in thinking require the right amount of listening to people that offer good ideas on what they are thinking about about and good criticisms of their proposals without being so taken with criticism that they abandon the confidence in their own new ways of thinking.
Most people are better off paying a whole lot of attention to conventional wisdom and criticism of their thinking. We all benefit if few people that have the insight and drive to come up with incredible leaps away from conventional thinking in powerful ways. Throughout history these people have also has some pretty wacky ideas and engaged in some pretty crazy social behavior. Didn't Newton (and many others) have some pretty good examples of this genius leading to incredible ideas and a willingness to consider ideas most sensible people would find idiotic?
Related: The Illusion of Knowledge - How We Know What We Know - New Management Truths Sometimes Started as Heresies - Children are Amazingly Creative At Solving Problems - Your Brain Can Jump to Incorrect Conclusions