I know how you tend to approach things as well so I don't automatically assume you are just jumping on a reactionary bandwagon and will give you full consideration.
The problem I have is that gamers have an immediate and visceral reaction to seeing denuvo, to the point where it doesn't matter if it does actually do nothing bad, they will assume any bad is caused by it. Like performance will always be brought up if its there but we have plenty of tests showing that performance impact is negligible at best.
Could it still have a performance impact? Sure, I suppose, there are way too many possible hardware combinations to be 100% sure that on some there isn't a noticeable impact. I'm not a fan of DRM in general, aside from steam since it actually gives a lot of functionality to the consumer instead of just sitting there demanding of the consumer, but Doom Eternal needed an anti-cheat solution on it. Pretty much anything they added would have yielded grumbling, this just has the denuvo name on it so people assume its the denuvo drm and go rabid. You can even see that in some of the replies in this thread.
So, I need to see that its really causing issues from a really good source before I back the narrative that its a really bad thing, because there is so much hostility already to the denuvo name that I can't take random users words for it, because at best they will just assume its the denuvo and not some other issue.