The thing is, King Thrash DOES know what he's talking about in his video that he called DF out on. Why would he need to make another video about it to prove he's right? If anything it should be DF defending themselves with a new video but nope, they went on era, twitter and now gaf to attack the guy. I take it you didn't watch his Gears and Borderlands video.
Now, I expect any channel presenting itself as critique or analysis to actually put a bit of effort into structuring and presenting its thesis, but even ignoring that and focusing solely on the points made I don't for a minute think he knows what he's talking about in the context of this callout.
Digital Foundry's purview is the technology behind the games; Pixel counts, framerate graphs, shading / level of detail / performance optimization techniques, all the stuff the game engine does in order to get a nice-looking image onto your screen as many times per second as it can.
What actually goes on in the game world - bullet holes leaving marks, surfaces having appropriate footstep sounds, characters getting wet - is straying into game design territory, and thus not the focus of the production. Sure, they'll praise a game if those touches are well-implemented and add to the presentation, but that's a footnote at best.
Framing DF as a source of misinformation and poor critique for not highlighting those things is hyperbolic, disingenuous as fuck, and entirely missing the point of what they do in their videos. Any luddite with a controller can start recording and whip themselves into a lather over poor game design, but it takes a luddite with technical expertise and specialized equipment to properly analyse the technology that powers it, and to relay that information to an audience in layman's terms.
So my takeaway here is that thelastword and King Trash are both playing themselves hard by stirring up rant-o-riffic drama (and fielding some truly cringeworthy fallacies in the process) over an inconsequential part of DF's content that can be had better elsewhere.