It depends how you define “print” or “printer.” It could be that neither is correct.
I know that this has been discussed ad nauseam on this forum, but the definition of print in the OED is quite loose. The nearest I could find would be “to make (a mark or indentation) by pressing on a surface or in a soft substance.”
Maybe you are right. Glowforge is both a cutter and engraver, but the name “3D Printer” is also obscure. A better description could be either “3D Builder” or possibly “3D plastic parts maker which requires a certain amount of finishing.”
I jest, of course!