I feel bad for this person. I like to think that I wouldn't be so bitter and angry in this situation, but really, who can say? That situation being, his wife has cancer, which has nothing to do with Atlassian.

It does sound like he has had some subpar managers (which is the cost of promoting from within, you will have managers learning on the job), but it also sounds like he is lashing out at a company for being a company. Light on details, and clearly one-sided.

Again, I don't totally blame him. Life has dealt him a shit hand this year.