Libertarians are always guilty of such "ironies", some would even call them hypocrisies. It's almost like the veneer of well reasoned ideology is a front just wanting more power.
Hypocrisy is not limited to certain groups, pretty much all people are hypocritical at times.
But you have reminded me to do a self-assessment, find all of the hypocrisy I can, and correct it.
All groups have hypocrisy where people push for others to aim for lofty goals, but fight tooth and nail to not have their local community pay the costs. Left, right, authoritarians, anarchists, etc.
Most folks already know that, but I just want to point it out since I personally identify as left libertarian.
A lot of us are simply interested in promoting and continuing to evolve and understand that well-reasoned ideology. We feel its application can improve the human condition.
The term "libertarian" changed a lot over time, from socialist libertarianism to far-right libertarianism. https://en.wikipedia.org/wiki/Timeline_of_libertarian_thinke... Here we are talking about https://en.wikipedia.org/wiki/Anarcho-capitalism and check out https://en.wikipedia.org/wiki/Anarcho-capitalism#Analysis_an...
The "bad apples" phrase is often (usually?) misused. The whole saying is: "One bad apple spoils the barrel". In general, it refers to corruption, and especially bent coppers. Here in the UK, we recently had the Commissioner of the Metropolitan Police saying that the rash of rapists in the Met is just "a few bad apples".
It's not just a question of taint; if you leave the "bad apples" in there, you'll end up with no good apples at all.