I think it's important to remember that good wrestling is a series of reactions more than it is a series of actions. That's not a statement about workrate; it's more of a statement about the purpose behind everything. Just like it's true that people pop for signature spots, unexpected directions and moves that are established as match-enders in non-shoot style wrestling, it's also true that the best shoot-style matches are the ones that are a reaction to the norms that surround them. The crowd doesn't pop randomly -- they have been trained to pop for certain things. That their reactions don't make sense to a novice is actually a compliment, because it's a credit to how great of a job RINGS did training its audience.
I can understand watching something like Han-Tamura and not thinking much of it when your points of comparison are more traditional pro wrestling. It doesn't really fit that mold. You're not going to see knife-edges or collar-and-elbows because those are associated with traditional wrestling that everyone knows is "fake". The genius of Maeda was creating a company (UWF and later RINGS) that really was worked, but they were able to convince people at times that they were real. Even now, there is sometimes debate over whether a match was a work or a shoot. So if you look at what has traditionally been pro wrestling's most basic guiding principle, to make people believe, this is a style that accomplished that in spades.
Imagine a company debuting in the United States that wanted people to think they were real even though they were worked. With the Internet, such a thing is less possible now than ever, so for argument's sake, pretend it's happening in 1982 or 1983. There were great things about the typical NWA and various territory styles for sure, but they would have to stay away from quite a few things that were staples of those styles if really wanted to distinguish this new promotion as the real deal. That's the mentality from which RINGS evolved.
Also, with regards to the low-end matches in these companies, I think it's a necessary evil in many ways. None of these groups ever had weekly television, but more than that, they were selling a style to the public that doesn't exactly sell itself. I think they needed to establish what a "normal" match looked like in that style so they could exceed that normal when the situation called for a classic match.
At its core, all pro wrestling is about conditioning fans to react in the desired way. Booking, ring work, interviews and promos ... it all plays a role. The joy of shoot style is in its heightened sense of audience manipulation. I won't deny the manipulative genius of Vince McMahon, but it's also fully transparent and most people see it for what it is. UWF, UWFI, RINGS and PWFG successfully blurred the line.
I don't think there's a binary here. Both are equally valid. It's just a very different approach.