Neo pronouns are essentially just another experimental project to combat some of the linguistic issues behind using they/them singular pronouns. Consider you use singular they/them pronouns for people you don’t know ("I found someone’s cell phone, I will try to get it back to them. ") or some people get confused if their attention wanders and someone starts talking about a non-binary person whether you are talking about a single person or not.
Some non-binary people find they/them pronoun options to be dehumanizing or dislike the linguistic effect problem… However there isn’t a cultural concensus on a strictly singluar non-gendered pronoun. There are a handful of established neo-pronouns but they are akin to regional varieties born out of very specific communities but non-binary people are not a monolith. Even inside our communities there’s a lot of variation. The attempt to try and normalize new language across is board isn’t high on a lot of people’s priority list who are fine with the path of least resistance because they are dealing with a lot right now. People who use neo pronouns know it’s a big cognitive ask but they are doing it for the same reasons any trans person who asks for an accommodation - a quality of life issue. Something about the status quo is actively not working for them. It’s not based out of a desire for attention or a way to feel unique - quite the opposite usually it is nerve wracking asking for an accommodation knowing people will likely treat you as lesser for asking.