Tuellece shouldn't be regarded as Goku Black, because you know next to nothing about him. So that's a reach on your part.
Also it was a normal 'Kaio-Ken', Goku performed a Kaio-Kenx10 in addition to Super Saiyan Blue, might I add that the artwork for it looked well.
Akira Toriyama doesn't USE the internet. It's stated in one of his interviews.
Neither of these two scenarios occurred within his original Manga. And if the new Arc turns out to be anything like the Champa Arc, you'll be left dumbfounded.