[MichaelCollins]

Abscond means to hide or steal away. I think you mean abdicate? That would make more sense in this context. It's still not quite right though, the author of a GPL work fully retains the copyright of their work, and merely give a license to others.

[Vinnl]

Oh sorry yes, I'm not a native speaker, thanks. And yes, they commit to not exercising some of the rights they have been granted as part of the copyright they do indeed still hold.