If you are going to claim something as harmful as that, I want you to present clear evidence and peer reviewed studies to support your claims.
What you were suggesting is that men are better than women at STEM. Simplg saying men have more testosterone doesn't cut it as evidence. (Besides, competitiveness doesn't make you a better researcher or employee, and can even be harmful in a team).
I also need data for the number 2 in that list. At what are men better at than women by a significant ammount? And how does that thing relates to STEM?
And number 3 doesn't prove absolutely anything. Women were subjugated throught history and basically no opportunity to do anything. Even with their limited possibilities, you still have women like Hatshepsut, Ada Lovelace, Marie Currie, Sappho, Ann Lister, Hypathia of Alexandria, etc. And now that they are finally allowed in higher education they outperfom men in terms of degree gained. So there is clearly not something that holds them back from studying. If they have the ability to get a PhD, then they can also be good researchers. Simple as that.
If you are going to continue with this subtle sexist talk (implying men are better than women at STEM), I want clear examples. Thanks.