The correct way is to judge people for what they activelly support, which also means not slimly implying that by not supporting one side people implicitly support the other - it's a perfectly valid position to not like any of the choices one has been presented with and thus chosing "None of the above" rather than A or B.
"If you're not with us you're against us" is just about the most typically Fascist (and, more in general, authoritarian) argument there is, so those doing it don't be surprised if, even if you're wearing a different mask than outright-Fascist and claiming you have the moral high ground, you're judged as somebody who thinks along the same lines as Fascists rather than along Democratic or Humanitarian lines.
Mind you, the quoted post is impeccably fair in that sense, but here in Lemmy there's a lot of people who, unlike that quote, stray beyond blaming people for their choices into parroting authoritarian logic that blames people for non-choices.