There are many places and times that people do not want to discuss the politics of the outside world. Examples could include while giving birth, while shopping alone at the grocery store, while sitting alone on a city bus, while performing surgery, while discussing your raise with your boss.
Just because someone does not want to discuss something here and now, doesn't invalidate that they have original opinions. Not everything is a dichotomy all the time. Plenty of people who are not fine with the status quo don't want to discuss it at work.
Which toilet (if any) I use is political. Being dressed as myself is a political statement. My right to have documentation that matches me is political. Whether or not I can be fired for being myself is political. So since one side has decided to make my very existence political then I think I have the right to talk about it. If you don’t want me talking about it at work then convince the GOP to stop trying to take away my rights, women’s rights, and so on. Until then tough cookies.
This reply is an example of exactly why people don't want to discuss things like this at work. People rarely want to have such a combative discussion with our coworkers, especially when framed as an all-or-nothing, very high stakes conversation.
If these issues, such as where you use the toilet, what you wear to work, what documentation you are provided, are relevant to your work-place, I would suggest that they are not "political" topics, but instead workplace topics and could, and should, be broached. However, I don't know GitLab's stance on this.
That being said, I do agree with you that all of these things are political, as well as who is causing the issues. However, your coworkers might not, and there might be very good reasons to continue to work with such people.
Just because someone does not want to discuss something here and now, doesn't invalidate that they have original opinions. Not everything is a dichotomy all the time. Plenty of people who are not fine with the status quo don't want to discuss it at work.