Earlier quoted context omitted.
If you have some unsubstantiated armchair opinions about something, the right thing to do isn't to publish them and wait for someone to correct you, it's to remain silent until you find a reason for you opinion, or change your opinion. Otherwise, we would drown in a sea of well-written articles that say "X is true" and "X is false" with equal frequency, and no matter how many we read we would never learn anything.
In mathematics, an unsubstantiated armchair opinion is called a "conjecture", and can be subsequently proven or disproven by the same person or another person. If scientists of yore had "remain silent until you find a reason for your opinion" we'd probably still think the sun revolves around the earth.
Strictly speaking, as you suggest, it wouldn't be wrong to write, "I thought about it, and although I don't have any reason to believe it, the notion that women don't form groups for the sake of comradeship settled in to my mind, and with a gust of wind, floated from there to this paper." However nobody would ever write that! Passing off guesses as knowledge only works as a career if you try to dress up your guesses as knowledge, for example by phrasing them in a way that makes it sound like they're already commonly known.