That ignores the psychological factor and assumes those soldiers will just follow the order. I don't think that would be the case, particularly as they're the type of people that typically own multiple firearms personally.

This, and the "but the government has nukes" argument, assumes the only scenarios are "no resistance" or "all-out war". In reality there's likely a step function where even the possibility of some armed resistance would go a long way in dissuading a would-be tyrannical government, especially in this age where anyone can instantly broadcast video across the globe.

That assumes a large enough portion of the population that wants to resist owns guns. I wish more liberals (especially groups likely to be persecuted) owned guns for this reason.