On Freitag, 25. September 2020 21:53:49 CEST Matthieu Gallien wrote:
[...]
> What would be the way to build a consensus on this subject inside KDE ?

Hi, we dissolved the licensing mailing list some time ago in favor to move 
such discussions on the community list. However, copyright year bumps are 
mostly a developer topic. So, I think, both kde-devel or kde-community both 
should be fine.
I would actually expect every developer to be on both lists.

Cheers,
Andreas