I think you are taking isolated reports as being typical and I don't think that is the case. Plus I'm skeptical of the few reports I've seen - I think they leap to unfounded conclusions about the source & reason for whatever water was seen.
First, modern "Energy Star" fridges simply don't shed much condensation - it's an indication of wasted energy. Second, the only significant amount of water comes during the auto-defrost cycle (about once a day), and it still isn't much. Less than 1/4" in the small drain pan and usually more like 1/8". Pan walls are typically 1" high, so it takes a lot of slopping to escape at all. And even if it did, it's simply not very much water.
There is, however, a known problem with some of these fridges that can result in water on the floor. Quite a few models use a duck bill type drain valve that is susceptible to sticking closed when food spills get washed away during the defrost cycle. All the many brands from Whirlpool Corp used that style until recently. I think Samsung did too. If the valve gets stuck, the defrost water does not drain into the pan and accumulates in the bottom compartment of the fridge, draining out onto the floor via the lower edge of the front door or drawer. If you see water on the floor or in the bottom of the fridge, you very likely have a sticky rain line that needs to be cleaned or replaced. It's not a result of use in an RV - the same thing is all-too-common in home kitchens as well. Whirlpool has released a new style drain valve that uses a P-trap instead of the duckbill check valve and that supposedly solves the problem (I just installed one in my home fridge).
