Except the "singular they" doesn't exist and in basically a forced change of spoken language by a minority who thinks forcing people is a great way to accomplish things
There's no other way to enact change than force or consensus, or mix of these. Consensus is not going to happen. Languages change very slowly.
Royal We was forced, but in widespread use. This pronoun is an offshoot thereof.
And other languages have even better pronouns than English. Check Chinese and Japanese.