I'm a social scientist who has studied this stuff for decades. You are a guy with a lot of opinions. Certainly, there are various schools of thought that recommend and teach self-control, but the fact remains that in a patriarchy, anger reads as a show masculinity and is quite often rewarded. Certainly, there are situations and structures where that isn't going to be the case, but as a sociological dynamic, it's right on track.

Men Are Rewarded for Getting Angry at Work. Women, Not So Much. | PCMA

Women are Punished for Expressing Anger but Men are Rewarded | The Takeaway | WNYC Studios

People Reward Angry Men But Punish Angry Women, Study Suggests

Workplace Anger Costs Women Irrespective of Race

“Previous research demonstrates that women who express anger in the workplace are penalized, whereas men are not, and may even be rewarded.”