For example, pluralism doesn't state there is no way to "find truth", but that in light of multiple views, to have good faith arguments, avoid extremism, and engage in dialog to find common ground.
> but there are genuine ethical arguments on all sides.
These ethical arguments, however genuine they may be, are not equal however, otherwise, you would be falling victim to making the false balance fallacy, commonly observed in media outlets, or the "both sides" argument we have so unlovingly become aware of in recent times. The False balance fallacy essentially tosses out gravity, impact, and context.
> That most of human progress over the past couple of centuries has resulted from companies doing what's most profitable, despite how non-intuitive that is.
Despite the over-simplicity of framing it as companies simply doing what is most profitable, this is, in fact, extremely intuitive, and has been studied, measured, and observed. I am curious what you find unintuitive about it?
> But I am saying that supposing there's some kind of obvious right ethical answer, and implying bad faith towards people at Facebook that they're somehow making decisions they genuinely believe to be wrong but making anyways, is not accurate.
This view may be true in a vacuum, but it is irrelevant. We live in American society, and there is an American ethical framework in which Facebook's actions can be viewed as unethical. Other countries that have this similar issue have their own ethical frameworks in which to deem Facebook's actions ethical/unethical.