Then you have a very skewed sample set. Empirically, libertarians rate in the single-digit percentages of the population. People who conform to the libertarian stereotypes probably even less so; I'm "libertarian" because I would tend to think we're overregulated right now rather than underregulated, but it doesn't mean that I want to indiscriminately slice everything away, nor that I am permanently predisposed to slicing everything away no matter how much we might somehow slice. I'd get off that ride sooner than a lot of other "libertarians".
Personally I can't help but reading anyone trying to blame underregulation on libertarians as effectively an admission that they have run out of excuses. There just aren't enough libertarians to have that much of an effect on anything. Even "deregulation" is not generally the libertarians running wild, it's non-libertarians trying to implement a "free market", for some definition of said, but they're generally not libertarians and the same people will happily vote for crony capitalism or a ton of other sorts of regulations.
You're refering to true libertarians, but many people like the idea of being one, or at least tell others that they are, even though you're correct that they're often just after some "free market" which is not free at all in practice, or just tax cuts.
Personally I can't help but reading anyone trying to blame underregulation on libertarians as effectively an admission that they have run out of excuses. There just aren't enough libertarians to have that much of an effect on anything. Even "deregulation" is not generally the libertarians running wild, it's non-libertarians trying to implement a "free market", for some definition of said, but they're generally not libertarians and the same people will happily vote for crony capitalism or a ton of other sorts of regulations.