You seem to be under the impression that everyone will want to buy a PSVR to go along with their PS4/K. You do understand that the PSVR is a add-on peripheral right? It's no way required to enjoy your PS4 games. It's all about options.
A) If you already own a PS4 then you can drop another $350+ and enjoy the VR experience.
B) Already own a PS4 and not interested in VR? then you don't have to buy it.
C) Never owned a PS4? Great, here's a more powerful one and pay either the same price or $100 more as the PS4 launch price.
D) Never owned a PS4 and are interested in VR? Cool. Spend $1000 and get the most out of your VR experience. (Still much cheaper than what it would cost to own a beast pc AND a Rift/Vive).
Not at all. The options you present are slanted towards the PS4K being a positive, and offer nothing in terms of counter points. In a world where the PS4K exists, there are two positions for potential PSVR owners:
1. You own a current PS4 and are interested in PSVR.
2. You do not own a current PS4 and are interested in PSVR
If you're in position 2, you have several options for enjoying all that PSVR has to offer at several price points, and get to select your ultimate situation within the Playstation ecosystem. If you're in position 1, congratulations - you get to enjoy PSVR with "significant" sacrifices for the same price, because fuck you.
The "options" your referring to are precisely why the PS4K, if it indeed exists and is indeed an upgrade, is a slap in the face for OG PS4 owners. If the PS4K materialises, it would self-evidently have been on Sony's cards for several years. OG PS4 owners would own the more limited hardware, but
not one of them chose to. Sony provided deliberately limited options to early adopters to ensure strong adoption of the weaker hardware. If given the option, or knowledge that the option would be available at some point, how many early adopters would have bought the PS4K over the current PS4? I'd wager a great, great many.
Buying the PSVR and using it with your current PS4 is absolutely
an option - no one can argue with you there. However, if the PS4K exists,
then that option is objectively the worst possible option. That's kind of the issue - current PS4 owners in no way chose their situation within the ultimate Playstation ecosystem. And in order to improve their situation, they'll need to buy a new, full price console on top the new, full priced peripheral, one they were original told would fully function with their two year old, full priced console. Options, as you put it, are important, and OG PS4 owners were denied them.