No, libertarian shortcomings are much more plentiful than that: pro-abortion, open borders, etc. etc.
I simply picked on the druggies at random.
Not all libertarians are pro-abortion, and some are not for open borders. Libertarianism (the philosophy) does not outrightly deal with national borders so libertarians can disagree. I would be ok with open borders only on the condition of complete removal of all socialistic programs and be completely sure that no more large scale foreign terrorist attacks would occur. The first is possible, the second right now isn't, so at the moment, I'm not for open borders, and I'm also pro-life.