I kind of get where some people are coming from if they're (in good faith) saying that by that time Adira should just be matter-of-factly correctly Stamets rather than acting uncomfortable, but here's the thing: the show might take place in the future, but it was made in 2020. Star Trek has always addressed the social issues of its time in a way that plays to the audience.

And hell, plenty of people are uncomfortable correcting others in general, regardless of the reason.