Yeah, high price of DDR5 is specifically why I'm a huge meh on that, but buggy new platform sounds like just enough chaos to make it interesting. That said, there's going to be a lot less opportunity-filled chaos with nvidia buying out every other industry out there :|High cost, buggy new platform with new never before seen tech, high price of parts especially DDR5.
And I know better than this, but what the heck -- if AMD backs out of vector processing, it would be a colossally stupid thing to do. It's not just multimedia, it's straight-on data stream handling. Consider FD.io/VPP as a random example. Even with CXL, you're not going to context switch between a stream processor and your CPU. Memory coherency is one thing, but that's a whole nother ball of wax. Not that the (apparent) performance of FD.io on TR is anything to celebrate, but do you really think AMD would go super-wide on core-count, while narrowing the core?
[wait, why does that sound familiar?]