All in all, we're still referring to a single scene from a single anime episode. She may be Toriyama's apprentice, but do we really know she went back and meticulously re-watched the entire series and read every bit of supplemental material to prepare for this project?
I guess if information exists out there that declares them as a separate character from the Tuffles, I'd change my position on the matter. I'm sure some future publication of some new guide somewhere down the line will include the new content from Episode of Bardock, and it may discuss the appearance of the Plantians, it may be a vague description as is historically accurate to the rest of the guides, posing a question rather than outright declaring one way or the other.
I can almost picture the entry in my head
"These creatures are the inhabitants of the ancient planet Vegeta, at that time called planet Plant. But who are they? Are these the Tuffle people who the Saiyans overwhelmed? Or are these a new people, never before known?" Then it could point out things about them like their physical traits, and point out how their healing gel reminded Bardock of the Rejuvenation fluid from the modern healing machines.
Eh, just throwing it out there. I was aware of the official appearance of the Tuffles, like you were--but even still, when I had been reading Episode of Bardock, the thought never crossed my mind that these weren't the Tuffles. The fact that they had the healing gel, seemed to fit with the theme that much of the Saiyans technology was "borrowed" from the Tuffles. In fact, that little tid bit is also of Toriyama's design, isn't it? Come to think of it, isn't the tidbit that the Tuffles were the original inhabitants of the planet also something coined by Toriyama himself? Or no? So in this case, you'd be willingly embracing one retcon over another, for if these aren't the Tuffles, then the bit about Tuffles being the original inhabitants would be invalidated.
Anyway, it's quite clear to me that you find the idea of them being Tuffles to be very far-fetched, but I feel like the points which I have made here are certainly valid, and should at least be considered. Can we really rule it out? I'd not call it a royal "fuck up" if they were. Just a re-design/re-imagining, or simply an oversight by an author who didn't know of this one little obscure factoid and a Toriyama who had long since forgotten, or had simply liked the look of these little creatures, and decided to embrace the change himself.




