Yes, Werks Performance makes nice stuff. You can get your shocks tuned by them and lots of other people. I can tune them too. There's nothing magic in there.
A couple of things I think you are missing. Firstly, vintage racing, where emulsion shocks remain in use, are often dictated so by the rules. In WERA here, if you are to run a vintage class, in all but the most open rule sets you are required to run "period" shocks. If emulsion shocks were indeed the hot setup, there would be no need for that rule set. Additionally, the travel issue is completely alleviated by the external reservoir. Finally, emulsion shocks have terrible heat retention properties, they retain heat too well. Frothy oil doesn't make for great heat transfer. Keeping the oil in a nice airless state means that the heat generated is efficiently transferred to the damper body and more easily mitigated. This is especially important on twin shock motorycles where motion ratios are nearly 1 to 1. This motion ratio means that piston velocity is high, which generates lots of friction/heat for a given wheel movement versus setups with different ratios. As a result, reservoir style shocks are the best option in a performance environment.
The threaded body style adjuster has more benefits than simply being able to screw it endlessly. It also accommodates different length springs if so desired. Also, as vintage motorcycles are always less than perfect, it is ideal to normalize rear preloads. You do this by allowing the sag of each shocks to be ever so slightly different but by applying equal amount of preload on both sides. This means that both sides of your swingarm see the same load and are required to act less in torsion (another problem fixed with the mono shock). With cam adjusters this is not possible as they dictate that each shock will be at the same preload. You are right though, if you are tossing your mom on the back, the cams are great for that quick preload adjustment.
The thing about dampers is that as long as they do something they are usually good enough for most people. You can spend money until you are blue in face too, but unless you or somebody you know is clued in on how to operate them there you will never see a return on your investment. I have worked on $30,000 shocks and i've seen this first hand.
Cheap China-grade junk will always be just that, cheap american-grade junk will always be just that, cheap Brazilian-grade junk will always be just that, and cheap Ukranian-grade junk will always be just that. I'm not sure what your getting at.