Are you still basing on your assumption on the accounts you received from two programmers allegedly working on PS5 games, as indicated on
this Beyond3D thread? Because, even there, you said you weren't sure if the hardware supported it or not, going so far as saying that if it did, VRS could be added to the SDK later (being an API-level feature).
If you have an official confirmation of that, please share your sources, as this guessing game has done nothing but fuel the flames of console warring, by arming trolls with misinformation and spreading even more FUD.
The worst part is that this discussion is, ultimately, inconsequential, as there are alternatives - either at the hardware level or via software - to VRS, as clearly indicated by the tweets and forum posts linked in response to you (the only public reports by actual industry professionals -
the Art Lead at Activision and
former PlayStation Principal Software Engineer, Matt Hargett), not to mention the
patent filed by Mark Cerny in June of 2020, which, despite describing "a scene in a virtual space" (likely referring to VR, where VRS, combined with foveated rendering, is most useful), basically describes what Tier 2 VRS amounts to. Now that we know for certain that the next PSVR will be tethered to the console (strongly suggesting that the PS5 will be doing all the hard work, and not the headset), it can be inferred from the patent that the PS5 hardware is capable of doing all the things mentioned in its text - including both tiers of VRS.
In the end, I find it extremely unlikely that an API-level feature capable of being reproduced in GPUs released as far back as 2018 (Nvidia's Turing) won't be implemented on the PS5 at some point, even if Sony
is lagging behind in terms of adding AMD's suite of FidelityFX techniques to their console. And if you want to get really technical about GPU capabilities,
neither the PS5's nor the Xbox Series' GPUs are "fully" RDNA 2. Yet, I don't see you or anyone else calling the latest Xbox "RDNA 1", "RDNA 1.5", "not full RDNA 2", etc.
Oh, and so we stay on topic, do you have anything to add to this comment of yours, given recent developments across multi-platform titles and the performance metrics demonstrated on this very thread?