No, that's not the issue. Most libertarians aren't deep-divers like me, either. A robust army does not consist of only light-infantry, or only cavalry. It has a broad mix of all the essential types of soldiers. If you want to know how the libertarian movement "should be" structured, go look at how the Marxists have structured their movement. They have been steam-rolling liberty for over a century. Given that they're literally fighting gravity at every step, they're certainly doing something right organizationally! The Marxists may be a lot of things, but they are well organized -- they are moving heaven and earth to impose their psychotic, upside-down-world tyranny.
It's a lot longer than 3 seconds, but if you really want to understand how the Marxists have taken over, watch the following lecture. Reducing attention-spans and cutting The Message down into quotable 3-second clips is one aspect of how they've done this, but before they were able to do all of that, they had to build an army that could do it. We don't need a massive, secret army like they do, because we're not fighting gravity. We don't need to move heaven and earth, we only need to provide enough force to tip over their insanity and let it crumble under its own weight. A lie repeated often enough, will be believed. But it's never really true, it's still just a lie. The Emperor With No Clothes was reduced to shame by a lowly child, with a single question. That's all we need. But you won't even get there if you try to build everything on 3-second TikTok clips. It will never hold up to the flames.