Since the article does refer to these as desktop CPUs, I'm curious what kind of desktop workloads people are running that could benefit from / justify them?
Video Editing while Gaming while Streaming while Hosting a server while Dealing with encrypted data while Multi-monitor while Contributing to science while while while
etc
AMD hasn't really declared which market they are after yet. It's likely going to be a big part of the launch event.
In this future the choice of 64 core computing is one of those things like car choice. Obviously we need cars electronically restricted to 155, we would not consider a car that only did 120 or so. There is a theoretical scenario where that vital power is needed but it is not a rational decision based on cost benefit analysis.
Therefore you can expect a change over time to where core total becomes marketing.
Beyond that, I could see highly scaled workloads like video editing that could take advantage of that much raw CPU power
I've tried the Real Time Path-traced Quake 2 that's implemented with GPU shaders https://amietia.com/q2pt.html and it's… not fast and grainy.