lol, oh please, of course they have the right to define what "they think" an RPG is, just as you and I have that right. Heck, you've been defining your idea of what an RPG is throughout this whole thread.
You're also confusing the differences in philosophies between JRPGs and CPRGs. Even going back as far as the early final fantasy games, they've been much different in their execution than say Wizardry or Might and Magic which were huge releases back in the day, just as Final Fantasy was.
Also, Xenosaga was not the last major turned-based RPG. I can think of a number of major RPG releases that have come out since then including the Temple of Elemental Evil that was turn-based and a major release, albeit disappointing due to game-glitches.
I would say your idea of an RPG is in fact more narrow and simple. I believe RPGs span a variety of different styles, but there are core aspects that make a game an RPG. The developers know this, I know this, and so do many others in this very thread. Stats and numbers don't make a game a "number simulator" more than a game is fundamentally a collection of 1s and 0s on the screen. The aspect of skills and attributes to affect the role-play of the character is fundamental to the RPG genre because it affects how the game and the character interact.
Arcanum is a perfect example of how this is supposed to work, where your backstory, race, skills, and affinities come into place to affect change to the world and throughout the game experience.
Your examples seem to be a bias toward the JRPG market, marginalizing the importance and popularity of the CRPG genre, which says to me that you haven't really played them too much if at all. Maybe I'm wrong, but I recommend you go to GOG and buy a few titles before telling others they don't have the right to have an opinion on something lol.
edit: To whoever said that Baldur's Gate didn't have skills...yes it did.