I think we could both care less which type of bag either of us uses.
Absolutely right.
Like I said I believe they both have their place. How one sees that place is all that differs. There are lots of ways to skin the cat.
Single wall floorless in your wet area... yeah, without a good shell or bivy cover, you're going to start wetting your bag (from the outside)
But I prefer to not soak any bag, synthetic or down. But the synthetic will keep you safer (warmer) if soaked, no doubt.
My only disagreement with the one guy here was that keeping a down bag dry in wet environments can't be done. It can. I've done it from the Kenai to Katahdin.