Okay, first, I don't think you actually linked to anything. You referenced a web site, but I didn't follow up on it. Second, what you quoted of the site didn't say you had to
know any of those pronouns. It only recommended that you ask what someone's preference is. Much like you might ask a new person in a formal setting if you may call them by their first name.
We'll get to the "infinite" in a moment, but what do you think "being sensitive to" a particular gender means? What are you objecting to in that respect?
Okay, let's go with your definition that "gender" is someone feeling their feelings and, if I can extrapolate a bit, how they label themselves is just representative, to them at least, of those feelings. We could make those feeling/gender labels "alpha", "beta", "gamma". It doesn't matter. They're just labels for a set of feelings, right?
But, since we live in a society where people interact and communicate with one another, we have to convey to one another what feelings are associated with those labels. If not, what is the point of having language anyway?
So, let's say that Amy labels themselves as an alpha and Ben labels themselves as a beta, both based on their individual feelings. For most of your life, let's say, you've only met people who've labeled themselves as either alpha or beta. You've never met a gamma, delta, epsilon, or even a zeta. Heck, you've never even heard of those labels before.
One day, however, Gary comes along and labels themselves as a gamma. Gamma, remember, is just a label for the feelings that Gary feels. Now, here are the questions:
- Is Gary's gamma label valid or less valid than Amy and Ben's, just because it is different from all the other people you've known?
- Is Gary, by virtue of being labeled a gamma, making you learn and memorize what the delta, epsilon, or zeta labels mean?
- Is Gary making you do anything different than you haven't already done for Amy, Ben, and all the other alphas and betas out there?
- Bonus: There are currently less than 8 billion people alive in the world and approximately only 108 billion people ever. The very vast majority of those people have only ever used the alpha or beta labels. Things you've read on the internet not withstanding, how many labels of feelings could there actually be?