Yes, OP is not responsible for the existence of the machine. But no, there is no real meaning to "minimalism" if you do not stop pulling on the machine's demand lever. Parent comment is questioning whether OP has actually done that, or if he's not simply made his demand less visible (consumer vanity).
This is off-topic, but, if as a society the goal were to put less stress on resources there are two alternatives: either individually consume less or, have fewer consumers. Neither alternative seems compatible with the prevalent economic model --see Japan's stagnation in a nation which is neither growing its population and where the current population has decreased its 'consumerism'. Still, ZPG or near ZPG seems to be in disfavor as a way to ease pressure on resources.
With regard to the OP. it would seem, at least marginally, relying on the machine rather than on personal ownership is more resource efficient.
And, yes, as others pointed out, minimalism, is a pretty malleable term.
