Liberal policies are an actual thing, a thing that leftists frequently disagree with.
Libertarians are often placed on the right part of the left-right divide. The fact you’ve chosen the label libertarian instead of conservative is animated by the exact same “purity test” that you find so silly.
Yea I tend to think than when someone identifies as a Libertarian they almost certainly don’t mean a civil libertarian, which is how the aclu actually identifies themselves.
This is literally the only time the word libertarian appears in their own history https://www.aclu.org/about/aclu-history