> Ask them if they like people using words like fa---- and ni---- and b---- in the workplace.

Low hanging fruit. What about using "guys" when referring to a mixed gender collection of individuals, as in "thanks, guys"?

I have seen coworkers publicly shamed by using "guys" in that way. Too often, the negative responses were as if the speaker had said "thanks to the men here only, and not to the women". This, despite knowing that "guys" is colloquially gender neutral [0], and despite knowing that's precisely how the speaker was using it.

I find it troubling that when etymologically gendered words become gender neutral, some people choose to fight to keep those words gendered.

[0] To the point that it is used even when there are no men present.