I have experienced some sort of condescension my entire life despite having parents who thought their girls were the equal of men. I have always worked in places with more men than women.
I have fought (in the sense of not being cowed) it all the way with patience and eventual mostly success.
My first male boss was the best - I could do no wrong. His wife did not work and raised 6 kids.
It actually depends more on the man in question - I am now in an environment with engineers, one of whom is really for women doing well, from the start of my employment. Another, with more of a Christian right-wing bent, was very wary at first, but after x number of years has changed. The work, to put it mildly, has been challenging. And the wives do not work.
When I was 17, I went to work in an industrial lab during university vacation - and by reports impressed the only men environment, because I only needed to have something explained once.
And on occasion, I have encountered the competition of other women - but that happens regardless of gender.