I have extremely mixed feelings about how this impacts things like game decompilation projects, but when it comes to cracking DRM my feelings are only positive. (Although I'm sure those on the other side of the DRM are unhappy)
When you crack some DRM, the DMCA makes it challenging to share your work with the world, regardless of the morality of your use case (say, repairing one's tractor). There is no longer a pressing need to share that work, when anyone can just say "computer, sync my spotify collection to my jellyfin instance, using correctly tagged FLACs", and it goes away and does it from first principles.
When you crack some DRM, the DMCA makes it challenging to share your work with the world, regardless of the morality of your use case (say, repairing one's tractor). There is no longer a pressing need to share that work, when anyone can just say "computer, sync my spotify collection to my jellyfin instance, using correctly tagged FLACs", and it goes away and does it from first principles.