This subject has been mentioned and covered in the past on GJ, although it might have been a side topic in a thread on a different subject, and the thread might have gotten locked or purged.
The guy has also done videos specifically mentioning the claims and how he runs his youtube channel.
I don’t feel like spending the time trying to find the videos or threads on either subject.
From what I recall.
Den of Tools specifically hates Snap-On, and may have a distrust or worse for other tool truck franchise companies, because he knew at least one or more people who lost their life savings trying to tun a franchise, and he felt the franchise corporation screwed the person over.
There was a GJ member who had similar issues, although with a different tool truck franchise.
That is apparently one of the reasons Den of Tools focuses on lower cost tools, and Harbor Freight, since the lower cost and non-franchise business model help prevent the issues of tool debt or franchise costs.
As far as “shilling” tool brands. I believe he has said in one of his videos, that he will agree to review or bump tools to the front of the list for review for a fee, and that he is also willing to accept free tools, but that he will not alter his reviews based on the fees, other than reviewing the tools sooner, or bothering to actually review the tools.
This seems to be similar to how major “craft/hobby” magazines probably came up with criteria for the inclusion of tools or reviews back in the day, so he’s probably no worse than Fine Woodworking or whatever other magazine.
I don’t way h all his videos, usually just ones on specific tools I might be considering, although he might be a goid method of keeping up with new releases, even if you don’t trust his reviews.