In our case, we have built a society in which it is safe to openly profess atheism even though the very foundation that even makes that possible is theistic. This was clearly, to my mind, the spirit of the Jefferson quote.
If I am reading you right, you are challenging my assertion that libertarianism tries to start from nothing, ostensibly to facilitate the greatest amount of liberty. I would love to be proven wrong on this. My bone with libertarianism is not with citizens' rights to believe whatever they wish, but rather with what I perceive as its notion to undermine the foundational latticework, itself not completely neutral, that makes this freedom possible in the first place.
Conservatives fought all those, you don't need to adopt the word libertarian to describe conservatives, that is part of their fifth column goal that they are contaminating conservatism with.
I think Libertarianism is hard to define in a practical sense. In this thread, it’s being defined too close to Anarchy. I certainly don’t agree with the premise of this thread that Libertarians are indifferent to the founding principles. Today I and other conservatives are rediscovering their Libertarian leanings and that’s a good thing I think.