"Why doesn't Asus do some real BIOS development and, for example, correct permanently broken MCR on 7000 CPUs instead of adding pseudo-features?"
You won't see much actual effort to deliver genuine performance upgrades to already released/sold hardware, as long as the media and outlets covering the industry just blindly glaze every empty "upgrade" released. They would much rather (both hardware vendors and the media who make money from affiliate links) see everyone buy brand new hardware every 18-24 months, even if the upgrades you're paying for could have been bios/software updates to your previous hardware.
For example, someone considering diving into AI/LLM for the first time, and don't know how they work, are who these updates/articles are aimed at. Anyone with half a clue understands that the bottlenecks for AI is typically GPU memory/throughput. If you're running a GPU with insufficient GDDR to hold the data needed to operate the model, the speed penalty applied to the compute is so huge using consumer grade, 2 memory channel processors. There are several generations of server/enterprise processors with 6 or 8 channels of DDR, and more PCIe lanes, that absolutely truck all consumer grade ryzen processors in AI/ML. And do it without doing things like decoupling the memory controller speed from the actual ddr speed. I have to laugh about this writer regurgitating the absolute slop about how turning off half the cores to the x3d CPU showing even better performance. This means 1 thing... the benchmark they're using is designed, or compiled, to use less than the maximum cpu threads available. Or they didn't overclock the CPU efficiently for the AI/ML load being tested, so it runs against a TDP or some other limit, and are benefiting from the lower overhead of only one CCD running, letting the remaining threads have a higher net wattage to work with.
Basically, a 2nd gen xeon scalable CPU with its 6 channels of ddr4 ram (heck, the higher performance gold xeon 62** processors are under $200 now, let's grab one of them so we can use sticks of optane dimms instead of standard ddr4 since they're $1 per GB now) will absolutely truck any brand new consumer grade CPU, even the zen5 99503xd, all else being equal (they also offer bifurcation so you can run 4 nvme as a single raid drive, doubling the write speed of pcie5 nvme drives, and you can run a bunch of those bifurcated drives.)