I imagine that even if Maya wins this case, misgendering could still be considered to be harassment in the workplace (depending on the circumstances and if it's deliberate etc.)
I think the trans community need to help us out here. If someone is gender fluid and you haven't double checked exactly what gender they are on a particular day (don't TRA's say that gender has nothing to do with external expression or stereotypes? So Pip Bunce could be wearing fishnets and a pink skirt and still be their male gender identity that day, non?) you could inadvertently be harassing them? How do you actually argue that isn't a deliberate action? And what about the person I know who was adamant for 10 years they were non-binary and then decided they were definitely a transman. Someone could have been on maternity leave or sick leave and come back to work and use the wrong pronoun based on not having the up to date information. Harrassment or ignorance?
I mean, if we're taking this seriously and we want to go down this road, then TRA's have an urgent duty to a)define exactly what gender actually is so we can all get up to speed on the science of it and b)throw that science at those of us with very small brains so we can understand how to get things right.
I do of course understand there are far more clear cut examples of actual harassment of trans people, which are never ok but misgendering should only be considered harassment under limited circumstances.