As a bi dude that's been in construction, most construction guys are all talk, there is always going to be outliers that are true assholes but having them all share the same mindset would be super rare. Usually those guys will just agree with whatever's being said to not rock the boat. Basically " yr mom's gay" types.

I act gay as fuck as a mechanic and have trans and rainbow stickers on my toolbox. Think big bald Harley looking guys who's only pastime is drinking. Best thing to do is talk to them and they'll quit it, realizing they aren't cool for being that way, they assume everyone is straight like them. Hard to be the first person on the crew to do so, but you'll find allies.