As soon as the genre becomes JSRPG I will agree with you that it demonstrably stands for Japanese-style role-playing game.
As it is now, the term is ill-defined. Because while Dragon Quest fits, so does Bloodborne. So does Monster Hunter. People would argue that Undertale fits. Your definition isn't ubiquitous. It's your take.
But by the same mark, Dark Souls would fit as a WRPG. Of inspiration and influence, sure. But carrying that label is pretty questionable to me.
You're only going by name, not remotely by any kind of definition. Thus, I don't see how this makes any sense and don't see any reason to continue. You don't want to go by how they're defined or any context beyond literally the name, so it's kind of impossible to have a legitimate conversation of what makes a JRPG/Eastern RPG it.
What I can say is that non-Japanese games have been labeled official JRPG's before, which is why the term Eastern RPG(the more correct term these days) is used. In addition, the actual original name is Console RPG's. JRPG was a poor new name used when the games were released outside of Consoles. Eastern RPG's became the new name when it was clear that it was far more a style and wasn't about being made just by a Japanese company.
For example, say an all new Final Fantasy JRPG would be released on PC only. Now, keeping in mind Console RPG is the original name, is it suddenly not a JRPG now cause it didn't fit the Console part? We all know that makes no sense, and thus, getting hung up entirely on a name and not how it's defined doesn't help.
It's also not ill-defined(in fact, you can find a ton of information on both. Including how the term Western RPG covers the entirety of Europe if we're going by name alone. ...Which includes the Middle East. Wait, that makes no sense. How can it be both Western and Eastern at the same time? Oh, right, cause the name isn't the point). You just didn't look it up very carefully. There's more than 2 types of RPG's, after all(I.E. Action Adventure, Shooter, etc). Western RPG's biggest defining traits is wide-open sandbox gameplay/story(yes, both), meaning no linear paths by design. Whereas the Eastern RPG's key thing is that it has a linear path and was originally designed to be for console releases(with WRPG being for things like PC's), but obviously the latter can't be its defining trait now, can it? It's fairly clear that being too hung up on a name completely misinforms people about its nature entirely.
I'll read your next message, but your only point is to continue on the name and not how it's defined properly, then there's no conversation to be had. You feel the name is all that matters at that point instead of reading up on anything. Cause if you took the time to do the research, you would know that it was always about style to begin with the second the term Console RPG became straight-out outdated. But more importantly, I'm sure you know why I bring up the original name, since it does prove things get outdated and redone to further articulate the legitimacy of the terms' own definition. If you want a good read, I suggest Wikipedia and TVTropes' information on them, as both are very informative on its history and explanation thereof how it's defined.
To further note on what I just said, the official term even Wikipedia uses is "Eastern", and more refers to the games being made in East-Asia regions. So even then, it only being in Japan is... clearly not accepted as accurate anymore. The final thing to clarify, is that these are genres, and all genres are about the types of specific materials used within said game in what defines a world, gameplay, story, and more. The country of origin(in this case, countries, not a single one) isn't really a key factor at all to a Genre. To even further quote the exact wording; A game that adheres to certain fictional tropes, such as fantasy or science fiction." I don't know about you, but that sure sounds like the style of how the game is made specifically. Since that's pretty much... what tropes are about, how something is defined directly based upon how the work is created.
The other description is "A genre is a particular type of literature, painting, music, film, or other art form which people consider as a class because it has special characteristics." In other words, the definition does... actually matter too. And WRPG and ERPG are both literally a type of genre of RPG. ...I also might see now why JRPG is used, since ERPG sounds too much like Ero Role Playing Game. So it's probably more of a "quick nickname for sanity" than anything else. But that's kind of why getting hung up more on names instead of their definitions is clearly better, heh.
