I agree but I also think of these consoles like people think about graphics cards.  Back to the 7900 example, the card is so for $750 to $1250.  Would a $600 pro be massively underpriced or is the 7900 XT over priced?  I always roll my eyes when we discuss Sony specific pricing like its not supposed to reflect the rest of the industry.  What is that?  Latest store was with PSVR 2.  The device is CLEARLY underpriced but public commentary seems to want to ignore that price like specifically this one company called Sony is supposed to go out of business by underpricing themselves out of existence.  Its weird.  Wasn't till Apple should up who aggressively tell the mass market to GTFO and prices their VR at $3500 and people are mesmerized.   

So what's the point? The PS4 Pro and Xbox One X were there to take advantage of 4K TVs. 8K TVs have negligible market penetration, as only super-big and therefore super-expensive TVs make that further resolution upgrade worth it (diminishing returns, and all), plus there isn't really any content being made in 8K.

Unless the PS5 Pro can make any game consistently stay at 60fps at 4K resolution (something that many games still can't achieve) and can do some good quality ray-tracing at either 1080p60 or 4K60, it just doesn't seem worth it.

8k isn't really talking about because as you stated the market penetration is negligible.  Of course if you own an 8K TV more power to you.  The real points are exactly what you said they are.  In general you would get more games that had 60 FPS Quality modes.   Games that just fall short on their performance modes would be brought up.  RT would be the single most noticeable difference for most people.   It would bring you more inline with RT on a higher end PC system.  And VR games would almost all run at native 120 with even sharper visuals.  Without exaggeration it would be the highest fidelity mass market VR experience available.

Extended Quality Mode performance

RT that would be far superior to an 7900 XT

VR on steroids

Also, consider that even though this may not be enough for most to upgrade, it is quite nice having those options available to the consumers who want them. 

I would caution people to wait for actual commitment for support.  As we have seen, sometimes these systems don't get any attention.  In much the same way that most PC games aren't designed to fully max out the ultra high end. 

In PSVR2 doesn't forget people adamant that it should support PC and at that cost =p

How does that compare to series x gpu specs?

2-2.5x on the GPU alone with faster and more RAM, and slightly or moderately improved CPU could easily translate to over a $100 of price difference. And the new Digital Edition (discless) should sell quite well for what it is because this time buyers will supposedly have the option to get the detachable disk drive separately at a later point. PS5 Pro will sell just fine at a starting $500-$600 pricetag. It'll just be an enthusiast device not targeting very high sales.

Many games are already struggling to run at sub 1440p 60 fps. As games become more demanding and make more use of raytracing and advanced tech like UE5's Nanite and Lumen, the workload will at some point be too heavy for the PS5 even at sub 1080p (native).

This is all just rumors.
But considering that the PS5 often runs games equal or better than the Series X, dispite on paper it being more Tflops....
A PS5pro, getting +50% compute performance, and being made for Raytraceing.
I suspect in games with heavy raytraceing, you could see perphaps double the series X performance at certain resolutions.

8k, imho, is stupid given normal sitting distances. At some point resolution has diminishing returns.

Will depend on your display size. But yes there isn't a big enough jump in power for 8k30fps and the assets would be more costly.

Roughly speaking its about 80% more powerful than the X.  This is negating the extra 4-8 CUs on the Pro. The actual boost is closer to about 100%.  BTW this is all without a clock boost over the original PS5.  So these estimates are very conservative.   And keep in mind that just because it is double the raw power of the X on paper doesn't mean it will be twice a performant.  For example, we know absolutely nothing about the CPU.  This may become the system's biggest limiting factor.