I am not going to say that I think Denuvo is good for gaming. I fully accept the importance of DRM for week one sales (which make a huge difference to publishers) and understand that activation models are incredibly useful for that but I also think activation model DRM is fundamentally shite because it renders games unplayable in order "Why is this random ass server plugged in in this closet?".
But I do think people overly attribute negative performance to denuvo. Implemented correctly, there are MAYBE a few checks per hour and that is system noise. The problem is that, for whatever reason, so many games end up adding the denuvo checks to critical path operations that either completely delay the loading of a new area or tank performance completely because it is checking a dozen times per minute. And that is 100% on Denuvo for not working properly with the studios they license their tools to.
But for the ones who DO implement it sanely? It is barely noticeable to the end user... from a performance standpoint.
Remember kids: Hate mother fuckers for what they actually do. Rather than going the "bitch eating crackers" route.