You're the one that brought up terminology. Complaining about someone elses "Wrong understanding of the term waifu"
Of course I brought up the terminology, because for him, a "waifu" refers to a sex doll from a porn game. And you, on the other hand, are just nitpicking words for no real reason.
When clearly, you have no concept of the meaning of the word in the slightest. You're trying to force its meaning to be this idea you have and then express that this is a very popular idea because of the terms ubiquity.
You're the one stretching the meaning, not me. I used the term to shorten and simplify long descriptive writing, and it's obviously clear what "waifu" means in this context - which is more than enough for the current purpose. We're not at a chemistry naming symposium, after all.