I have many fears: size, definition, how they don't present the risk in the project, proprietary software have all been mentioned; auto-calibration seems a bold

I have many fears: size, definition, how they don't present the risk in the project, proprietary software have all been mentioned; auto-calibration seems a bold promise, if necessary; I am positive that ‘use other filaments’ is not going to end well for most heads. What I do wonder is that ‘energy saving’ aspect: Yes, 3D printing is spectacularly wasteful (it's been the elephant in the room since Doctorow’s Replicators, that conveniently appears after limitless energy -- as if limitless energy wasn’t the huge industrial revolution) so improvements are probably easy to do, but… electronics-switching savings? That can only come if the main consumption, the energy spent to melt the plastic, is reduced. This means either miracles in thermodynamics (under $200), or the plastic that they are offering melts at lower temperature. So I have this question: how likely is it that a cup of such a plastic would melt if you put boiling water in it? Not a lot of melting, destroying the cup, or even anything spilling a few carcinogenic molecules in your coffee, no: just the occasional deformation?