Disagree wholeheartedly. Reasons, one, limited availability, wooded warbirds are runs of max 15, some as low as 1 or 3. The wooden warbird market is a small one and if you are in that market, you don't care about the price, you are more interested in the type and quality.
As to future values, trust me when I tell you, I can sell my original Chaffee, Landing Craft, Ambulance, Tiger(s), Schwims, 88 Guns and Tents for many many multiples of their original value and their modern counterparts retail price. Collectors collect for a lot of different reasons, accuracy, detail, historical evolution, completeness, etc. The older models have held a nice appreciation (they were lower retail to begin with and they were done in more limited runs in a lot of cases) and I believe will continue to.
Another example is a vintage Britains collector, let's be honest, a lot of what's out there is not in pristine shape, lacks boxes, paint is only 80% , but guess what, its a huge market. I just sold a bunch of single figures I found in my basement that were vintage Britains Farm and Railway, most repaints, missing parts, singles, I got many multiples of what I paid and deemed them worth. New and more detailed is not always better in the eyes of collectors.
TD