Normal condensation should evaporate,but if you have antifreeze getting in your oil you have a problem that needs corrected regardless if you have a spinner,bypass filter or not.That's why oil samples are so important.
Condensation should get boiled off I agree. It is possible for various reasons to have a very small amount of anit freeze get into your oil. It is also very corrosive to bearing metals and doesn't take much at all to start damaging them. Even if there is a larger problem you may not know about it until enough has built up that you can tell on the dipstick.
I thought about it this way also, water and AF are heavier than oil, and we are talking centrifuge, so oil should stay on top and water and AF get spun to the outside. But where could it accumulate unless it is able to drop down into a reservoir and later be drained? I think I'll send an email to their technicians and see what their reply is.