Dunno how to feel about this. I think a 2023 date is way too soon, since 3P devs won't even start leaving 8th-gen behind en-masse until later 2022, so you think they'll be happy to have to start spec'ing for even more powerful Pro editions of the consoles half a year later (if they want to start getting ready for a late 2023 launch for at least one of them)? You'll end up with Pro models basically acting as resolution boxes like the PS4 Pro and Xbox One X were, and wasn't it agreed that both systems weren't really leveraged to their fullest because of the need to support their base platforms anyway?
Also what's the motivating factor for mid-gen refreshes, particularly on Sony's side? I can see a factor for Microsoft but that really involves Azure and game streaming that they could just conveniently spin out to a consumer product. I suppose that could be a factor for Sony as well but only if they're planning to seriously ramp up their server networks within the next year or two, although some corporate comments seem to suggest they're going to be more gradual/less aggressive on that front. Would 8K televisions really be enough of a factor at the mass-market level?
Otherwise, I can agree with his point that if the main motivating factor for the customer would be performance, you might as well push hard and double performance and price it at $600/$700. That could be a really good box for PSVR2 in Sony's case, even if the base PS5 has features (like Alt Mode support through USB) for VR built-in that won't require a breakout box. RAM prices aren't necessarily dropping and what power consumption savings they'd get on 5nm (for an RDNA 3 design, which is likely what a PS5 Pro would be if it's launching in 2023, maybe with a few things from RDNA 4 pulled forward) are negated by going with a bigger GPU (whether monolithic or chiplet), and I think they'd want to stay in a certain TDP and package size so all that combined I can't see them doubling RAM bandwidth, but like MLID says they could have some Infinity Cache onboard to offset that, and probably 3D V-Cache for the CPU (16 MB - 32 MB).
I still think it'd be a tough sell tho for $600 (let alone $700) in late 2023, especially if regular PS5s don't seem like they'll be in regular supply until sometime mid-2022 or maybe a little earlier, could alienate some of the customer base. As for Microsoft I still think they will scale down for a Series S refresh (streaming stick or box) and scale up for a Series X refresh (driven mainly by Azure to possibly support 4x Series S instances on one SoC, so at least 16 TF performance, and I suppose Sony would want to aim for that as well but both could easily try going for around 20 TF compute performance), and possibly phase out the Series S in due time or repurpose it for Surface laptop devices in that space.
What I'm more interested in tho is what 10th-gen systems will try going for, because I don't think "more power" is going to cut it anymore, or faster storage, either. We're getting to a point where the hardware is NOT the limiting factor, but rather development cycle times, production costs/budgets and manpower. I hope Microsoft and Sony are looking into developments (such as developments in user-directed AI programming data models for bulk low-level asset creation, innovative software funding models, etc.) to push those forward and look towards standardizing VR (and potentially maybe even AR) support/integration for 10th-gen systems because that's what I think is going to justify the existence of consoles for another generation.
Without that, I think the prospect of another major console generation could genuinely be in doubt.
.
