Hmmmm, I have always preferred female gynecologist people, but it's not coz I think men are going to 'sexually assault me.' Indeed, I do know (like many women,) that the vast majority of men are not sexual deviants!!
For me, it's more because of embarrassment. I was shy and embarrassed enough at flashing my foof in front of FEMALES, but no way would I want to flash it in front of men.
After having kids, I became less shy or embarrassed or bothered, but still prefer females. As has been said, they are usually more gentle.
Same with dentists.
Without a shadow of a doubt, every female dentist I have been to is soft and gentle and I can barely feel a thing. Men are more 'rough...' Probably not deliberate, maybe they don't know their own strength, idk! But no, I don't want a man doing my smear - and I don't want a male to female trans doing it either, as they would still have the man's strength.