"It isn't about this at all"? All right, let's review then:
The OP (along with the thread title) is not about "comparing governments," but dealing with the difficulties of living in a system where "the majority of people" support policies that -- in some cases -- make actual human life impossible.
The first response that happiness received -- that "there is nowhere better than here" -- is not necessarily true. It may be true that there is nowhere better than here for DavidOdden, just as it may be true for me that "there is nothing better to eat than a peanut butter sandwich," but neither of these are universally true, and to say that they are (in the name of "objectivity") is to forget the role that context plays in objective thought. For instance, if happiness could secure the treatments he needs in some other country then it may well be better for him to move to that country to receive those treatments.
Is "nowhere better than here"? Not necessarily for happiness, not necessarily in that case. (Note that I am here employing happiness in a completely hypothetical capacity; I've no idea about whether this is likely, or possible, and do not mean to comment on his actual situation.)
Then JASKN wondered whether the US is truly evil (or "over-the-top evil") and he concluded that it is not, because he is still somewhat free (he "can still get on the internet and badmouth any branch of the government," and etc.).
These comprise the two main responses. (Well... there is also Nicky's "response" of "most board members disagree" and "all the rational people I know can handle reading the news," which, in a better forum, would have been called out well before now; but I have already given him enough attention.)
So if the response is, "but it is better here than elsewhere," that may be true (or it may not -- more in a second), but it doesn't actually speak to the matter at hand. If the response is, "things aren't so bad for me; therefore, things aren't so bad for you," then it is an utter failure.
Yes, it is possible to evaluate two governments -- or to reason that X is better than Y -- but not without a context. Value requires a valuer, and Singapore (or the United States) may be the best option for some yet not for others. For the sake of further precision (albeit risking a touch of clarity), let me amend that slightly to say that it may be possible to evaluate two governments without a personal context, but not in any meaningful fashion. Evaluation is not some activity disconnected from life -- we evaluate things for a purpose, and that purpose guides and shapes our process of evaluation. If a person "evaluates" two countries from a standpoint outside of his own context, then he may well conclude that "this is the best/better country to live in" and be correct in all cases except for himself. This is pointless at best, and at worst lands the drug smuggler in a Singapore prison for life, and -- as I've imagined it -- spending his time singing the praises of the "relatively free" government there.
Besides which, some "comparative" approach does not render the evil actions of any given government, Singapore or the US, less evil; and if we mean to speak to the OP or even simply the title of this thread, it does not necessarily help us to understand how to live in a country where such evil is tolerated or promulgated by our fellow citizens.
What value is this comparative approach, then? It appears to be meant as a palliative, because "there is no such place as Galt’s Gulch." But some people are working towards the creation of Galt's Gulch, or something like it, because they do find the present situation intolerable. Those who are content with the status quo have no real reason to struggle against it -- and I mean that as no criticism. But let's not tell others that they must be content, as well, especially when their situation/context is potentially different from our own.
For I maintain that those who say that the US is "not so bad" are able to do so, in part, because they have been fortunate in their experiences; there are other people for whom the US is so bad. (They are the people in "The Lottery" whose number has not been drawn... yet.) In point of fact, I do not expect that someone rotting in a Singapore prison for life, for "crimes" which ought not be crimes, will be constructing odes to the supposed relative merits of their system. He will be too intimately familiar with its failures -- and the personal consequences of those failures -- for that.
And if you think that's what "objectivity" requires -- for the chained-and-whipped slave in the Antebellum US, say, to praise the US government because of the relative degree of freedom it allows for the people in the North -- then I fear that your approach to both "objectivity" and judgement are mistaken. It is not about assessing things according to some average, or some generic "everyman," or (ahem) "EVERYONE. Equally.", it is about assessing things according to whether they further your personal, individual life and happiness -- and then acting accordingly.