[John O]

I was reading at one point that, in real life, the "switchable" modules, instead of being switchable in days would take weeks.

The linked article makes many good points but it never establishes that swapping modules would take weeks. If you include the entire effort of getting the modules to the swap point (assuming forward deployed) then yes it takes weeks. But EVERYTHING takes weeks if that is your measure.

Swapping an entire package out and in can be done in about a week if all the components are on hand.

[PapaBear3625]

See this article section "Module Issues"