No conclusive proof have been provided. Nobody connected to this "case" seem to understand what conclusive even means. As have been stated now multiple times, we can't take action based on accusations.
We in no way support people launching DDoS attacks, and have punished people for this in the past. We also did way more work than would've been required to ban a few people, so claiming we're taking the easy route doesn't seem justified.
I understand that it's frustrating for server owners to have to deal with this, but it's really nothing we can effectively do. You seem to be under the illusion that we can magically stop the attacks, but even if we banned the attackers they could still easily obtain a server IP and continue their attacks.
This discussion doesn't seem to be going anywhere, so I suggest you drop it now.