One line of thinking around requiring usage of preferred pronouns is that normalizing the act of giving/asking for pronouns allows for more inclusive spaces. For instance, if someone is transitioning between genders it might not be obvious what their gender identity is, and assuming their gender identity can lead to further dysphoria. At the same time, if you are someone who sees that the only people who get asked for their pronouns are people who do not obviously exist at either of edge of the gender spectrum, then the act of being asked for pronouns is tantamount to someone admitting their own confusion of your identity. This issue can be resolved for all parties and gender identities when asking/giving pronoun preference is the norm. For people with more straightforwardly normative gender identities, offering preferred pronouns is an act of solidarity with people who might not have the privilege of their gender identity being so obvious.
Doesn't that approach have the downside risk strongly elevating gender to be essential to activities where it really has no business?
I have no idea what your gender is and I don't think our interaction would be improved by forcing you-- by either rule or convention-- to specify something. Doing so would unnecessarily prime my sterotypes and perhaps leave you and/or me worrying that my response was unduly biased by the knoweldge. An effective requirement-to-specify implicitly makes a strong assumption that your gender can be described categorically rather than as, say, the fractal attractor of a complex collection of partial differential equations. :)
For a long time online I've tended to fill out apparently pointless gender fields with a "none of your business". I'm happy to support people identifying in whatever way they find most enabling, but at the same time it feels like a step back to elevate gender as important in contexts where it isn't after working so long to push towards a more gender blind world.
