Screenshot of original video: https://www.resetera.com/threads/digital-foundry-posts-an-ad...
It is a bit shameful that games journalists didn't cover this at all - seems almost like an omertà. Even assuming the mislabelling was an honest mistake, running the ad in the first place makes me trust them less. Worse, I used their videos when deciding to buy a Switch 2! I would have been much more skeptical (likely ignored them entirely) if I had known they were taking money from Nintendo.
If you believe that this influences their view of the Switch2, then by all means, get your information elsewhere. From what I've seen, they've actually been more critical of Switch2 than most other outlets, highlighting the issues with the blurry screen and also the rather lackluster line-up from third parties, mainly because Nintendo is intentionally stingy with dev units.