The terms "value" and "judgement" have a broad semantic range. I mean to use them here in a sense that presupposes an exercise of subjective preference.
Machines, amoebas, programs, etc. can make choices, yes, and they can weigh alternatives, sometimes by assigning scores (aka "values") to differing outcomes. When I say that "Making value judgements is something that, by definition, conscious beings do and that non-conscious beings do not do," I'm trying to establish a narrower, more restricted definition than the broadest possible meaning of "value" or "judge."
So it's not that I "know" that values and judgements have anything to do with being conscious; I'm using these terms in such a way that by definition they do, because that's the set of things I want to talk about. The question then is not whether I'm right or wrong yet, but rather once we restrict the set of all things that could be called a "value" or a "judgement" to only the ones that I'm trying to make qualified assertions about, whether that set is empty (in which case everything I'm saying still evaluates to True, but vacuously and therefore uselessly so!).
I'm arguing this way because I think that narrower set a) exists and b) is relevant to the argument I'm making.
> Is the dog conscious?
I think dogs are unquestionably sentient (i.e. they are able to detect and respond to outside stimuli), and seem to display, in some minimal degree, at least an approximation of sapience (i.e. they are able to understand themselves and the world around them; hold and express preferences; form relationships and make decisions based on them).
I don't have a way to test whether a dog is conscious or not, and the dog has no means of trying to persuade me one way or the other; so I have to remain frustratingly agnostic on that point (frustrating to myself as much as I'm sure to you).
Did you mean dogs don't have values and judgements? I suspect they do, and those might be much more different than dog consciousness vs human. And one judgement might be "human gone; i do wtf i WANT bro" or, you know, something vaguely like that.