100% true: Star Trek has blind spots.

Star Trek has some real biases, as it’s a work by flawed people in the late 20th century. Some of the more obvious ones:

Super heteronormative. It boggles the mind that by the 24th century, there could be so few queer people. Even more boggling is that monogamous marriage is so common among multiple species! Really?

It’s also weird the gender binary is so firmly entrenched three hundred years from now, and across so many aliens. You’d think a progressive future would be filled with a diversity of genders as broad as the diversity of species depicted. Not so.

The one time TNG really went in on gender, it was with a hot androgyne who Riker wanted to hook up with. Not especially pushing any frontiers there.

Again, a huge part of this is that Trek is a product of its time. We had very poor context in the 80's and 90's for discussing these things, and the bulk of the people writing the show weren’t affected by them. It’s an instructive lesson on how even the best utopian thinking may be limited by our own biases and experience.

Great question, thanks for asking!