In both instances it turns out that the difference in magnitude of those threats makes the direct comparison misleading.
For instance : https://boingboing.net/2012/02/23/microsoft-google-and-netfl...
(But «bad actor» was perhaps a bad choice of words, since someone buying devices or using media with DRM is of course not as evil as someone pushing them. But they are engaging in bad behaviour nonetheless.)
For TV, use it as a dumb display for some FOSS TV box, running something like libreelec.
As for DRM attestation, that's not the responsibility of anyone but the DRM vendor, so ask them.
And bad ISPs⁰.
And a small subset of MitM attacks.
> advertisers are a more present and pervasive threat to most than their own government
That is true for me¹ but I'd not agree with "most" globally. And while stalky corporates and the people who will get hold of my data subsequently due to lax security are my main concern, there are other ways to mitigate them. Less convenient ways, sure, and I loose a security-in-depth step of ashtray using them anyway, but I consider that inconvenience for me² to be less of an issue than the more serious problems DoH might mitigate for others.
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[0] some people don't have a simple "just go elsewhere" option
[1] relatively speaking: I don't consider my government that trustworthy, and will do so even less in future if the Tories get back in without major changes in their moral core, and I'm sure many Americans feel similarly if they consider the implications of Project2025.
[2] both as an end user wanting to avoid commercial stalking and as someone who sometimes handles infrastructure for a B2B company that uses DNS based measures as part of the security theater we must present to clients when bidding for their patronage
DoH is a double edged thing, advertisers are a more present and pervasive threat to most than their own government