You greatly underestimate the ignorance of the average consumer, for the average consumer which this product is a 90th percentile this is a clusterfuck. Also that's not correct, Microsoft's drive is not half as slow as Sony's. There's a big difference between the way they advertised their SSD's.
Microsoft only ever advertised the sustained speed of their SSD, sustained speed. Sony on the other hand advertised theoretical peak speed and never mentioned sustained. Given the actual results in games it appears that Sony and Microsoft's drives both in sustained and peak performance function virtually the same.
Per usual people such as yourself got hook, lined and sinkered by marketing snake oil.
Considering how much people like you were hooked, lined and sinkered by MS branded snake oil about the unparalleled power of the Xbox Series X with its amazing GPU running everything at native 4K 60fps with full ray tracing and the Xbox Series S being a Series X at 1440p for the whole 2020 and then being served with the reality of many games running better on PS5 this is incredibly funny to read
Also do you realize that they're requiring SSDs to have at least the 5.5GB/s bandwidth that was advertised for the console and even then they can't 100% guarantee the exact same performance of the internal drive while Microsoft's SSD card is just a standard 2.4GB/s Seagate card? So everything you have written about the hard drives speed of the two consoles being actually the same is your own fantasy? Some multiplatform cross gen games are never going to use certain features at its peak potential.