This can be said for hundreds if not thousands of possible fields. Not a single client has done it yet. The point of the NIP repo is to define defacto standards already in the wild, not hypothetical plans.

There are many more people using monero addresses in profile metadata today and yet nobody is just merging that as a standard, even though it actually already is one.

This was clearly a politically driven PR, it wasn't about protocol standards. 

 Once a client implements this feature then you'll be all for this change? 

Ditto has already implemented it 😁 

 I am for people doing whatever the hell they want with their own notes and clients and relays  

 Ditto implemented custom fields not pronouns in the base object  

 That's what I said. I like Alex's implementation. It's more inclusive, allowing for a wide variety of options.