The left doesn't like the Scouts. The left doesn't like Flynt.
Neither sees the point: When the will of the majority is used to violate the rights of others in pursuit of morality, you empower your opponent to limit your own rights.
The left sees discrimination as immoral. The right sees pornography as immoral. Both hand the government a big stick. Soon enough, government is staring at you. And he's holding the stick you gave him.
Correction: The right doesn't like Flynt.
Sorry for the typo.
Democrats think that they can force their personal beliefs on everyone (just like forcing the boyscouts to accept gay leaders). Libertarians think that they can deprive everyone of any kind of standards, whatsoever (creating chaos). True conservatives see that through communities, and groups (like the boy scouts) we can share morals and standards and function as our founders intended.