Gee I have no idea why the 343 Studios has completely gone down the shitter.
While it may sound like sexist, I lately saw a study about men vs women at jobs. And conclusion were that men do more things related to the job / are more efficient at it on average than women, whom spend more time to do things that are not related to the goal of the job (like social stuff, taking care of needs of others, thinking about feelings and so on). In the same exact job. And if those "not directly related to job" tasks are still kind of mandatory, someone have to do it anyway so maybe it is unfair to women if men just do their job and dont care if there is milk in the fridge or not
Simplified: men did on average "100%" and women did "80% and 20% wasted on other things" or something like that.
And all women I have talked about how it is to work on place that consist mainly from women have said: it sucks, so much of energy and time wasted in gossip, trash talk, envy, talking and then instead of being team players they form smaller social units that "fight" for the glory + try to down talk other units. And bosses are usually selfish assholes whom favor their inner circle.
Same women have said that if they have been working at job that have mainly male workers, it is much more relaxed and no time wasted to stupid "who is the head chicken" fights.
Yes, there are talented women and shitty men, and not all workplaces are like this for sure. But if/when there is some truth in this = I would not be surprised if woman only dev team cant achieve same as male only dev teams, even if they are equally talented.
Maybe it is easier to men to be "No-life workers" and spend long hours at job while women like to leave after official hours are over, I have read about that too, men do much more overtime.
Genders have physical+mental differences so of course they can affect the performance of a team. On good and on bad. And there is probably some kind of balance of genders & personalities that is perfect for the performance
On this case, if that picture is from the 343. Maybe they are just shitty devs or their leadership sucks, no matter the gender? OR they have 500 men and these are only women? (but there is at least few men in it too)