@tinker This sounds A LOT like the justification DHS put out to approve their own (totally illegally in like, multiple ways) not-a-rule-but-absolutely-a-rule to collect social media handles to.. root out... terrorists attempting to enter the country... when the whole system only affects those legally in the country. "Immigration benefits are optional."
Except the biggest chunk of people affected are literally not applying for an immigration benefit. Naturalization is explicitly carved out in the Constitution. All the other stuff is pulled out of someone's ass to keep out first the Chinese and then all non-northern-Europeans 100 years later.
And sure, if you have already finished the I-485 process it's entirely optional to apply for the non-benefit in question, but the other applicants are applying because DHS have insisted on illegally detaining them if they fail to do so with a huge lead time. It would be optional if their liberty interest is optional. Enforcing illegal EOs is also optional. Working for DHS is optional. Except agents had an actual choice that they made to be fascist thugs who repeat the utter nonsense coming out of the White House which accidentally defined foreign terrorist in a way that only Donald Trump seems to fit the entire set of definitions to a tee (thanks to the UK's nationality laws technically making him not someone who can move there but via his mother, the equivalent of what we call being a national). Can't make this stuff up.