Besides that, although it might be our responsibility to protect our content, it is Linden Lab’s responsibility to act correctly once a DMCA report is filed. As is talked about extensively in the comments at the official blogpost, it does not make sense that a content creator needs to file a separate DMCA report for each and every location the infringing content is sold. For instance, imagine a skin texture being ripped en reuploaded in-world: all material created with that texture will have the same texture UUID. Why not just change that texture to something that says ‘taken down because of DMCA complaint’? It would be a nice change for the ‘missing image’ texture.

I would love to see some statistics here, though. How many DMCA reports were filed to LL last two years, and on how many they reacted. And in what way.

What we have here is a group of talented programers with a dream that never envisioned actually having folks unlike themselves in their world. While the idea of a government and a justice system did occur in their minds, it never grew beyond the mode of ToS they were used to seeing.

Second Life™, having evolved past it’s humble beginnings, is less in need of a governance team and more in need of an actual government, complete with legislature, administration, and justice system. Simple common sense tells us that the same framework that defines the rights to use a Website will not effectively manage a nation state is ridiculous. the ToS needs to evolve, too, or be replaced with something more effective and robust.

It IS your responsibility to protect your content. You do this through the usual legal venues such as DMCA and whatever copyright enforcement provisions your country may provide.
Not by trusting that client-side permissions will do your job for you.
It’s like using javascript to make people’s right-mouse click on your website pop up “DONT STEAL MY HTML!!!”.
Client-side permissions Just Dont Work.