Yes, an outlier to make the point, but the difference in the threads is this: sharing and informing on what's good and bad in the world of entry-level watches, which is most of the discussion here. There are many of us who float around both watch threads, but I think in this one we also see a lot of younger, less watch-obsessed but kind of interested, and brands that are focused on that level of the market - even if some of the bigger players especially, also make a more expensive line. Nobody talks about Ananta or Grand Seiko here. They do in TWAT.
Whereas a new thread on vintage watch hunting is likely to be a lot more technical, nerdy (in a good way!) and more leaning towards the obsessive nut..and a heady drug to bring in others. I joined in TWAT four years ago having just fixed up an vintage Omega, about which I knew very little. Now I'm..well, I'm here...Anyway, I just think the tone, content and readership of a thread that's about getting the best value from classic vintage pieces has its own special quality.
Anyway, it's not for me to tell someone to make a new thread, and in general I agree that less division is better. But just as you've said that in reality there is a lot of high-end dick-waving in TWAT that makes a cheaper watches thread more attractive, and this is it - a flourishing discussion about watches that would attract no replies or interest in other surroundings. I suspect that a threat about vintage watches would allow that discussion to blossom in the same way, with its own character and direction. But I'm not going to tell anyone they can and can't post here, it's just a suggestion.
Edit: missed the other point; yes personally I think that a $2k watch that's regularly around for half price e.g ETA B&Ms, those lovely JeanRichards etc, does belong here, because they're effectively available to anyone in the PMW bracket. My point about the vintage ones is really more about their market, their specialist interest and the process of identifying and buying them. It's a bit different, and an area that might be worthy of its own exploration. In the mean time, the love it still strong.