No, that was the Libertarian party strategy, not the libertarian strategy. The Libertarian party is a joke, and libertarians are not monolithic.
The author is correct to point out that the winning coalition is one that includes libertarians. Conservatives committed to free market principles will find that they can attract libertarian voters.
What have libertarians ever done to help the GOP? They ever act as a magnet to draw the party to free market principles? They ever mobilize to get behind such a free market Republican? I’ve never seen anything of note. All I’ve seen is whining about the GOP and supporting LP candidates who bleed votes from the GOP.