You haven't shown that though, not at all.
Your link doesn't support your position, and your arguments that we need to use a term incorrectly and confusingly are not helpful, not thoughtful and not at all compelling. Especially with the very strange "there's no council which says..." and "niche community" nonsense here. That's not how languages work. Except maybe French lol.
This isn't up for debate. The usage is clear and common, and your "niche community" now is tens of millions of people, where back in the day, it was tens of thousands to low hundreds of thousands.
You're trying desperately to shove the needle in a direction it doesn't go so yes it's going to be hard!
Also you're flatly wrong - ARPGs do not stem JRPGs as you previously claimed. The definition ARPG is Diablo. The direct ancestor of Diablo is Rogue, not any JRPG - indeed it was turn-based for a lot of its development. That you don't know that is fascinating, given you're claiming such wisdom and knowledge.
The term WRPG is essentially dead, replaced by just "RPG", with JRPG being used to mean something more specific in the same way CRPG is. Elden Ring, for example is not typically considered a JRPG, despite being an RPG from Japan, because it is an Action RPG or just an RPG.