Ahhh, so you're just making stuff up and trolling I see. Microsoft and Sony's dealings with AMD are identical. Sony ain't just borrowing bits and pieces and doing all the rest themselves with no help from AMD. Are you sick in the head? They are both customers of AMD's semi-custom business and AMD has reiterated how this arrangement works over and over. Both companies take and choose what IP they want from AMD's product roadmap, and then they integrate their own special additions, tweaks or personal IP to it, but this is done in partnership with AMD.
AMD built Sony's SoC just as they built Microsoft's and did validation testing and all that stuff. Sony did not make AMD's IP themselves, Microsoft did not make AMD's IP themselves. They work together and collaborate on ideas, and then those ideas can become part of future or current AMD products, but this relationship and the ability to customize AMD's IP isn't unique to either Sony or Microsoft. It's the same on both ends.
If you believe Sony went ahead and was just like "okay, give us this" and then went and built AMD's RDNA 2 based GPU, Zen 2 CPU and the whole 2 SoC entirely on their own with no assistance or support from AMD at all then you my friend are way too far gone to take seriously. Microsoft built and made many of their own drivers for Series X, just as Sony has done on their end. Even the firmware for the SSD in Series X is custom created by Microsoft.
Microsoft quite literally notifies the development community of driver updates to the Series X GPU. I don't know where you're getting this stupid idea from (it's old console wars thinking) that everything Microsoft does is off the shelf and lacking in innovation, and sony are taking a few scraps or pieces of their own and other people's bootstraps from here and there and magically creating entirely new CPU and GPU designs matching closely to AMD IP themselves. Do you actually believe this garbage?
And turing was used as example to show that Series X has Mesh Shader capability or specs beyond other mesh shading capable cards. I showed evidence for it with Turing, but I guess I shouldn't have expected you to take my word for it on PC RDNA 2 also. So here's that proof for you here. PC RDNA 2 also has the same spec max for mesh shader as Turing, though at the time of those tests a group size of 32 was the sweet spot for Turing. Series X supports Mesh Shader group sizes beyond even PC RDNA 2 cards such as RX 6800XT.
Series X goes up to 256 max thread or group size, and it has been tested to deliver better performance than smaller group sizes. The Max on PC RDNA 2 for mesh shaders is 128.
So I've provided some receipts to back up what I'm saying. Where is the evidence to support the crap you're saying? There's even a video straight from AMD's presentation to back up what I said about the PC spec.