The license doesn't apply to the things you print with it.
Are you miffed by the restriction on you selling derivative open printers?
Are you miffed by the restriction on you selling derivative open printers?
[0] https://www.eff.org/pages/list-printers-which-do-or-do-not-d...
As long as softwsre isn't going to be proprietary, it is a good idea just shouldn't misguide about being open source.