Learning them is the point. The folks doing this are narcissists and they demand that others focus on their supposed identities to feed their narcissism. If one navel-gazes endlessly, contemplating one's feelings constantly, it helps make one feel better to have others pay attention to that. It affords justification. This third party is listening to me and doing what I say - I am important, I am the focus.
They constantly say how minimal this is - all you have to do is just use my pronoun. Why is that so hard for you? Well, when I have to wonder as to each person's peccadillo or preference -- when I have to have a process every time I meet someone to ask for and then log their pronoun - and technically I'm told that for each person, those pronouns can change regularly with or without notice to me - then, yes, it adds up to a load of responsibility on my part. And, you see these demands in each interaction that goes viral, where someone berates a minimum wage clerical or fast food worker for not getting the pronouns right.
It gets down to - to put it indelicately - we don't have to give a flying **** about your stupid-ass pronouns. Sorry to say it, folks, but that's the reality. Yes, people want to be courteous to you. People want to be polite. Most people don't really want to rock the boat. But, this is beyond the pale now. You're not asking for us to accommodate 1/2 of 1% of the population who has an issue and politely asks to be referred to in a certain manner. We're being asked to upend and modify our interactions with 99.5% of the population in order to cater to that 1/2 of 1%. That isn't fair.