TLDR: Please attach the CC0 license to your decompilation and disassembly projects. If you don't, it unnecessarily restricts what others can do with them.
Plea maintained at https://gist.github.com/Dragorn421/937dce411e81b326854c8c2cf1ae69e6
I am not a lawyer and this is not legal advice, but I do have a deep understanding of what I'm writing about here.