The short form is that in this very small pond there’s more money to be raised amongst dissatisfied far right nutjobs than center lefts who understand economics. Once you’ve made that shift you can’t come back from it without giving up the grift and shrinking your audience.
I see these sorts of threads all the time and they never seem to do any introspection concerning libertarianism itself. There is a lot about libertarians that turn off non-libertarians, deserved or undeserved, it doesn't really matter.
Persuasion is important. I'd say especially so if it is an out-group that already starts out on poor footing.
Where's the outreach too? Libertarians do a ton of outreach to the Right, and have for awhile. The outreach to the Left is more the exception than the rule. I hear many blame this on disinterest and refusal from the Left, but isn't that a bit question begging? These things are a two-way street, and in many cases I feel libertarians don't reciprocate.
He brings up some examples to make his argument here, but they aren't necessarily intuitive for people, especially if they aren't familiar with the reasoning. I don't think people should always assume things are as clear as they see them. We tend to think the things we believe are obvious.
In any case I'm not sure if I accept the premise either. I'd say some flavor of center-left market liberalism is fairly widespread in a lot of policy and political circles. It just is a lot less ideologically rigid and pure than many libertarians are comfortable with.