Your argument boils down to "it's shit because it's expensive", this makes your whole point garbage. It's an enthusiast piece of hardware, it's not meant to be cheap, however Linus has got it wrong with the pricing,
because the Aorus Adapter only costs 150 bucks. You do not have to populate each slot with a 2TB high-end NVMe SSD which is what makes it expensive.
Sweeney said that the PS5 SSD is better
than anything money can buy. Linus is showing you that you can buy something that shits all over the speed of the PS5 SSD, sure... that doesn't mean it's performing better in a game, because it's lacking typical console optimization. However, over 20GB/s should be enough to brute force anything.
Then you also have enterprise PCIe SSDs. Micron's new X100 hits 9 GB/s and is also the first SSD using 3D Xpoint instead of NAND. Samsung has the... PM1735 (iirc) which hit's 8 GB/s read speeds.
Sweeney should've said that the PS5 SSD is far ahead of your typical gaming PC