Fundamentally, the use of pronouns is to point towards something. And the more information loaded into a pronoun, the better it can point. They arent here to validate the person, but to convey information and to point towards them during conversation.

People choosing their own personal pronouns, thereby choosing the way theyre pointed at, has the added benefit of validating them. But from a linguistical standpoint, all they do is change the pointer and the informations and assumption tacked onto that pointer.9

What the person above wants to express is: While neopronouns can be used in personal conversation, its not feasible to include them into the curriculum for anyone and the chance of your specific neopronoun ending up as a widely used one within your native language are near zero. I think your friends and your immediate surrounding should definitely address you by them. But especially with rapid changing pronouns or those that contradict the phonology of a language or that are close to existing words, they wont see much use. People will fall back to other pronouns, because it simplifies communicatiom for them.