I think environment and priming play a large factor. If you're comfortable somewhere than it's easier to shrug off potentially annoying behavior, and if you're somewhere you're expecting sexism (or simply primed to expect it from men in general) I think you're likely to notice it a lot more. I think this is part of the reason you get some people who are like "Ugh I see sexism everywhere it's horrible" and others go "I haven't noticed this so much"