The GPL applies to code built on top of GPL code, this is the viral nature of the GPL.
Anyone with a GPL license for the code can license anyone else, it does not have to come from the original creator. So Rossmann has a license granted by the creator of the fork. Also the source that Bambu Lab provide on GitHub provides a license as well.
Rossmann has only reuploaded the slicer fork, not any firmware (the article title is inaccurate). But yes, the slicer’s AGPL license does not apply to the firmware.
You aren’t understanding the GPL correctly.
i’m using “on top” rather flippantly here, since orca is AGPL. but bambu may also have separate code running on the machines that is not agpl.
Rossmann has only reuploaded the slicer fork, not any firmware (the article title is inaccurate). But yes, the slicer’s AGPL license does not apply to the firmware.
well then. my argument is moot.