> but once you decide that laws are secondary to your personal and professional needs if you don't get caught, you're likely to use the same argument in other respects.
I think it's more nuanced than this. Something being illegal and immoral, are two different things (there's overlap, but not always). Some laws are completely wrong and breaking them is not immoral. IMO (you may disagree) academic articles "belonging" to the publishers and being copyrighted, is one of them. Hence, I'd rephrase what you wrote above as: "but once you decide that laws are secondary to your [...] needs [...], if they're terrible laws that should be changed, (but probably won't be, at least in the near future, due to inertia and lobbying), you're likely to use the same argument in other respects", which is much less problematic and in some ways a good thing.
Obviously, motivated reasoning is an issue, so you should be very careful not to fall into that trap and start breaking laws willy-nilly arguing that they're all bad laws.
> Citing the original paper instead of the Sci-Hub URL only increases the extent to which you're pretending to follow the law.
How is it at all relevant how I got a paper? Once upon a time, there were paper copies of journals in libraries. If you were citing a paper at that time, you wouldn't write "Journal of X, found on the 3rd shelf, in the 5th aisle of the Y library". In current times, you can (usually) legally get a paper by pestering the original author for a copy, by e-mail. If you do, you wouldn't cite the paper as "obtained from Original Researches, mailto:zzz"). (If you put a "link" in the citation, it should be the DOI (digital object identifier) as it's the universal(-ish), immutable (hopefully) identifier.)