What we have is multiple, violently overlapping political magisteria, with the consensus of any particular thread depending entirely on which hemisphere is awake at the moment, who posts first (and thus guides the thread in a particular direction,) and whose posse downvotes the opposition the hardest.
That is, if you're American, the bias is invisible. If you're not American, you can see the the 'American-ness' a mile off.
An analogy: When you speak, do you have an accent? Or is it only others that have a noticeable accent?
Complicated and shifting; there are a number of sizable factions that you can usually count on showing ip, but the relative prominence and energy shifts rapidly. (People who claim there is a consistent bias pretty consistently claim it's the position diametrically opposed to their own, but this misperception is pretty eqially distributed among the factions, so the current dominant viewpoint can therefore usually be determined by simply inverting whatever is most commonly described as the consistent bias.
And then there's a lot of honest religious arguments about programming tools and such, so hail Eris and enjoy learning from the chaos.
> Libertarian, reductionist, pro-capital. Heinlein acolytes.