A funny anecdote from outside gaming land:

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Sony mirrorless cameras, even MEGA expensive ones, have this quirk where they can’t film 30P HEVC video.

The A6700 for instance, can record 24, 30, 60 h.264, but only 24 or 60 h.265. The A7C II is particularly handicapped, with only 24 h.265.

The $7000 A1 flagship is the same. It doesn’t make any sense; all their hardware supports it.

Why?

Well, people kept asking Sony, and someone finally got a response:

https://us.community.sony.com/s/question/0D54O00007B6m2ISAR/why-sony-a7s-iii-doesnt-support-25-or-30-fps-in-h265-codech265-is-available-for-24-50-60-100-120-fps-but-not-the-once-ive-mentioned-aboveplease-sony-update-this-h265-is-going-to-get-more-and-more-popular-with-new-powerful-laptops-coming?language=en_US

Hello, Sony’s commitment to customer satisfaction is our top priority. The reason for that is that we determined the current product specifications from our analyses of target users and available technologies. For XAVC HS, we envision users enjoying HLG movies by connecting the camera to an HDR (HLG) compatible BRAVIA TV over HDMI, and 60p is what we view as the default setting for playback with it. To record movies in higher quality in 4K/30p, we would recommend selecting XAVC S and XAVC S-I, 10-bit 4:2:2 sampling, either Long GoP and All-I codec. Could you tell us how creators such as yourself want to use HEVC at 30p so we can provide feedback to our design team?

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I found that oddly enlightening.

“Well, it’s not optimal for a BRAVIA TV over HDMI, so why would users want this? Why is it worth it for us to waste half a kilobyte for this option in the UI?” Sony cannot fathom anything outside that.

It makes that whole list in OP’s post make total sense. It’s not even cynicism on their part; with that mindset, what would they need a disk player for? What value is Bluepoint is a business review?

They literally cannot understand why PlayStation users would want any of those things. It’s outside the domain.