The original Gopher is licensed under the Creative Commons 3 Attribution license: https://golang.org/doc/gopher/README
While technically you could license your own stuff under the WTFPL, these gopher images are still CC BY 3.0 underneath that.
While technically you could license your own stuff under the WTFPL, these gopher images are still CC BY 3.0 underneath that.
Licensor cannot revoke adaptation rights, as long as attribution is given, even for commercial use.
So the use of WTFPL is fine here, but the lack of attribution renders CC BY 3.0 non-applicable, and hence makes this repo a copyright infringement.
See here: https://creativecommons.org/licenses/by/3.0/
> If supplied, you must provide the name of the creator and attribution parties, a copyright notice, a license notice, a disclaimer notice, and a link to the material.
For reference, here is how official Golang README puts it:
> The Go gopher was designed by Renee French. (http://reneefrench.blogspot.com/)