There's two discussions being had here, and I think that's the fundamental issue.
There's the entirely subjective one, where people are upset or disappointed because what they wanted isn't being provided, and that's totally fine. I understand, that's your right, you represent an enthusiast subset that is understandably going to be let down by this device not having the UHD disc capability.
Then there's the business discussion, where folks like myself, Matt, and Verendus have tried to provide actual verified explanations of what market research showed internally, and what retail is seeing with the actual reveal and now availability of preorders. Sony choosing this route for business reasons and seeing that the format would be no major influence on the role of what the Pro represents is based on their insight into the realities of the product planning and market.
This isn't a 'defense'. I personally have no investment in whether or not they have a UHD player ability in this hardware. It's unfortunate for those that want it, but seemingly, like huge majority of my customer base, it doesn't matter to me in the slightest. The people talking about buying XB1 S consoles instead, I've encountered a single person in my stores who said that was their reason, because the Pro didn't have that function. Of the many conversations I've had discussing game hardware and the market going forward, the frustration on here is extremely concentrated, and doesn't reflect the mass market at all. That's all I've tried to say.
Be upset, be mad, talk to Sony. I'm not saying stop doing these things. Otherwise how will you get your voice heard? But anyone speculating it will have any serious impact on the product has a gross misunderstanding of the market in general, and how this really looks.