I think this exact situation is what leads to a lot of the frustration, and i have touched on it before. Some of the tinker crowd insist that there is already a baseline for what a tinker is and is not - and that is ridiculous for a class not implemented into the game. I have used this analogy before; using a few random crumbs as evidence that you have a complete cake, AND that you know the exact ingredients is not a good argument - especially when many of those crumbs are 20+ years old, and from an entirely different game.
Opinions and fan theories are absolutely fine - but to pretend they are factual and to claim to hold some authority over what a tinker is and is not, in the context of a playable class, is asinine.