What is the deal with Elon Musks new son’s name?

I feel like I’m missing something and can’t read between the lines.

So Elon Musks girlfriend just had their 1st baby together and they named him “X Æ A-12”.

This is Grimes’s explanation of the name:

•X, the unknown variable ⚔️

•Æ, my elven spelling of Ai (love &/or Artificial intelligence)

•A-12 = precursor to SR-17 (our favorite aircraft). No weapons, no defenses, just speed. Great in battle, but non-violent 🤍

+

(A=Archangel, my favorite song)

(⚔️🐁 metal rat)