I would disagree, to me the growth looks weak, and could not stand the strain of being outside. Nothing to do with humidity. I certainly would never leave them in standing water. You'll drown the roots. If the branch doesn't recover the plant will put out another. I never had such weak growth on a fig where the branch itself droops.
When I see leaves suffering from being used to humidity, and taken out too soon, the leaves usually curl and brown at the edges, not droop. To me it looks like the roots were damaged in transplant and need time to recover. I have seen leaf stems droop when roots are suffering. Figs are different than most plants, when young and transplanting do not disturb the root ball. When older not a problem. Beans are like this too, why you direct sow them. Young plants cannot be transplanted. Figs are kinda like this when young. I would say when you transplanted them the root ball broke up a little.
When I root cuttings I root them in a shoe size box, with moss. When rooted I just pot them up and don't wean them from humidity. Sometimes any formed leaves die, or become damaged but the plant always recovers. As long as it has enough roots. Some with just a few roots could use to be weaned, or left to form more roots, else they will not make it.
When taken out you need to pay attention the roots, not foliage. Not too wet, not bone dry, but let them dry some.