Apples and oranges. Part of the reason for the premiums was the built up demand caused by missing two full model years and the production delays sure didn't help. When the Gen 2 is in its 5th year of production, it won't be trading at a premium, I assure you.
Gap or no gap, the market would not have supported ADMs if the V6TT was undesirable. We are nearly 2 years in and most buyers feel lucky if they can find a MSRP deal.
By every metric the G2 has been a financial home run for Ford and its dealers. There is certainly no evidence the V6TT hurt sales and 2018 numbers will get close to matching the first 3 years of G1 production combined! (helped by 15 months of production, but still an impressive feat).
ADMs are coming down, but at some point in 2019 the G2's production totals will exceed all five years of G1 production and I bet most dealers will still be insisting on ADMs. And lets not forget the G2's sticker price is a lot higher than the G1's too.
The guys who brought us the V6TT Raptor are getting huge bonuses and promoted, not fired.