One of the biggest problems with IP law, the DMCA included, is that it's all built on a foundation of presumption of guilt. Unlike the rest of our legal system that presumes innocence by default, IP law does the opposite. Once an accusation is made, guilt is presumed, and the target must prove they aren't guilty, with punishments being enacted first. Get a takedown notice, and you must comply, THEN you can challenge it. But in the meantime, your store, your video, your song, etc. is offline if-and-until you can prove the takedown is wrong. All assuming you CAN fight it, that you have the resources to do so, and that the platform you're on has sensible avenues of recourse.
All of it protects the wealthy and powerful who can lob takedown requests with impunity since few are going to be able to fight back. We need a complete overhaul. We need to change the presumption of guilt in IP law. And we need to allow people to fight back and defend themselves before their shit is taken down.