As for how I arrive on my views, it's obviously not an entirely rational process, but the rules you get from viewing property rights and self-ownership as fundamental seem to lead to the most preferable outcomes to me. If I were forced to adopt a more deontological philosophy, it's also the one that has the fewest obviously absurd conclusions, though not entirely. From this it's, in my opinion, pretty obvious to be skeptical of copyright law more generally (Ayn Rand would disagree) and therefore I welcome any precedent that weakens it.
And your first sentence is not remotely true--or rather, it is quite conceptually confused. Whose "confusion" are you talking about? Not mine, generally. There are of course disagreements about which side is right under the law, but often those disagreements are a result of bad faith--take just about every case Trump has ever appealed up to the SCOTUS. And many of the decisions made by the current crop of right wing ideologues on the Court are made in bad faith, especially Alito, Thomas, and Gorsuch, in that order of corruption. Many of the "disagreements" are based on bogus "textualism" and "originalism" frameworks that are applied completely ad hoc and hypocritically and were invented by conservatives solely in order to provide them with a basis for making rulings based on their ideology (the historical record is quite clear on this).
Anyway, the point was that I decide based on my view of the law, not who the parties are. Since you seem to completely miss the point, have poor reading comprehension, and are just adding muddle, I won't comment further.