There used to be a grudging respect between the ACLU and the Federalist society. They disagreed on a lot, but not everything by a long shot. I saw ACLU officials speak at Federalist Society events and vice versa. RBG was famously friends with Scalia.
But the current mood is absolutely moral certainty and off the charts self righteousness.
The moral certainty is obnoxious to a comedic level, bordering on tropes of self righteous college students in Che Guevara shirts lecturing about their enlightenment after two semesters at uni.
The goal of the Federalist Society is to replace every single member of the Judiciary with hand-picked candidates that strictly agree with a narrowly-defined canon of legal doctrine.
Their members may be less openly confrontational - more genteel - than some ACLU employees.
But if you think they're any less certain of their morality, or any less self-righteous than those ACLU employees, you're not seeing reality clearly.
But the current mood is absolutely moral certainty and off the charts self righteousness.