This article in Motorsport magazine by Mark Hughes seems to provide a good summary of Arrivabene's leadership.
https://www.motorsportmagazine.com/o...riends-ferrari
"This is the man who a couple of years ago broke his usual vow of not talking to the cameras – to say that Vettel should stop trying to run the team and concentrate instead on justifying his position as a driver. He maybe took that as man management skills. Instead it lost him the respect of one of the biggest assets at his disposal."
"So we eventually arrived at the position in 2018 where the worst race team was running the best car. It wasn’t the worst race team because of the people within it – but because of how it was being led. This also seeped through to the mindset of its lead driver."
"Arrivabene’s job probably wasn’t advertised but if it had been it should have included this line: Intimidation and one-dimensional thinking would debar the applicant."
From the article it would also appear that Binotto is an excellent leader:
"As Arrivabene ran the race team through a culture of intimidation and fear, his opposite number in the technical group Mattia Binotto had convinced Marchionne of how the removal of fear could unleash much of the creative talent of the people within. Marchionne acted upon the suggestion and applied management science to making it happen – lo and behold Ferrari became the most creative technical group on the grid after years of just following the lead of others."