The reality of course is more complicated. Without copyright there's no GPL. Which I guess is fine if you're in the OSS camp more than the FSF camp. MIT and BSD licenses basically (functionally) give up copyright.
Copyright is also what allows for hybrids like the BSL which protect "little guys" from large cloud providers like AWS etc.
Copyright allows VC startups to at least start out life as Open Source (before pivoting later.)
Of course thus is all in the context of software copyright. Other copyrights (music, books etc) are equally nuanced.
And there are other forms of IP protections as well (patents, trademarks) which are distinct from the copyright concept.
So no, I don't think most people here are against copyright (patents are a different story.)
2. I generally don't like the BSL.
3. No comment. I think OSS projects that exist incidentally versus being the company's main product have always been more reliable (and less susceptible to the company pivoting to closed-only offerings).
4. Copyright has perhaps been the most evil in the music industry; books, less so. I'd rather not even talk about movies or TV right now. Nonetheless, I'd tolerate an extremely limited duration copyright, if no copyright at all isn't an option.
5. Trademarks are mostly fine, because they're primarily supposed to serve customers, not the companies. I'd like to get rid of patents now, however.