If a junior person on a team is a jerk, he'll be called out quickly vs a boss who is a jerk. Like everything in life, one can get away with a lot of bad behavior if they are high up in the food chain.
He was aggressive towards his competitors, certainly, perhaps too much. His decisions around the web were perhaps "jerk-like".
But normally this word means he was nasty to other people he worked with. There are mixed stories about that. A lot of them boil down to him being a boss who simply expected good results and made his expectations clear.
If you look at CEOs of successful companies there are always lots of people ready to describe them as jerks. Mostly when asked to back that up, you get stories where they were just firm with people about what level of performance was required - the sort of thing any CEO needs to do.
There are jerks everywhere, and there always will be. Like diseases, tornadoes and mosquitoes, they are part of life.
I think our energy is better spent creating an env that empowers nice people and encourage them to defend themselves. An env that calls out bad behavior.
It's way more durable.