Yes, my pronouns are made up.

Every pronoun we use is made up at some point.

I know quite a lot of people who would use them if they thought others would actually say them, but they don’t because for whatever reason they’re not confident enough to assert it.

The same is also true of things like ze and hir pronouns, they’re uncommon and therefor harder to pick up and use, which prevents people from claiming them, and then others will call them redundant because no one uses them.

This is despite, in my experience, that it is not a lot harder to change the pronouns you use for a person to ze and hir or ey,em,eir than it is to start using singular they for an individual for the first time. It’s hard but given that you can learn new habits and words, perfectly doable. Hence I never really bother asking acquaintances to use them because they’re possibly never going to actually have to talk to or about me again, but I expect (and deserve) to have anyone taking the effort to come to know me to respect my pronouns, even if they’re hard. I do expect to be catered to, and I will demand it of the world when necessary.