Don’t confuse the big L Libertarians with the small L libertarians. The latter wants nothing to do with the feds having the power to sanction or prohibit anything not specifically spelled out in the constitution.
According to you there isn’t anything in the constitution to enable abortion or the homosexual agenda anyway, so we can prohibit it.
We just need to overcome the power of the leftists/little l libertarians, since they managed to create them both, and used the constitution as their argument.
By the way, there is no difference between libertarians, big or little, except that the big Ls are brave enough to leave fantasy long enough to try and put libertarianism into practice.