An example of this is what you wrote above "A 2nd HEDT platform built on a 2 generation old mobile architecture with core counts barely matching their competitor's low-end HEDT part".
I mean who actually cares?
all that matters is "what does it do and what does it cost". That's the only way to objectively analyse any product.
OK, there's 2 different things going on here.
Firstly, who would care? Purchasers would care, should care, and must care if they are to spend their money wisely and maximise their returns, especially for workstation purchases. For argument's sake, let's say the rumoured performance of the 56 core Ice Lake server Xeon does indeed outperform the 64 core EPYC Rome CPU. We can loosely extrapolate then the 36 core Ice Lake HEDT chip will give the 32 core Threadripper 3970X a good beating.
So, what does it do? Beats the comparable competitor's product in performance. But does it cost more to do so? If so, how much more? Knowing Intel and their skewed pricing structures based on erroneous self-perception, that 36 core Ice Lake HEDT could easily approach the cost of the
64 core Threadripper. At which point what is the benefit of paying so much more than the 32 core Threadripper? Or could you see even greater returns by stretching the initial purchase to the 64 core Threadripper?
So that's the somewhat superficial "who actually cares" from a purchasing perspective.
The second thing, which I'm surprised you're missing, is you're participating in a community of enthusiasts who look at the bigger picture. It is not simply a case of "what does it do and what does it cost", but the actual technologies involved, the architecture, the process node, the platform, the longevity. So, who would care? Tech enthusiasts and purchasers with at least a modicum of technical knowledge would care, should care and must case.
That fact that in 2021 Intel are releasing an HEDT product range built on 2 generation-old technology yet can only draw parallel with AMD's mid-range, soon-to-be previous generation HEDT product is an issue, and yes you should care. Yeah, the 36 core Ice Lake will probably trump the 32 core 3970X, but that's too little too late because Threadripper 5000 is imminent. Knowing how Intel operate, there is unlikely to be an upgrade path for that 36 core Ice Lake, whereas the 32 core 3970X can be upgraded to a 3990X now and the 5000 series later. Plus, the process node use is an indicator how power and cooling requirements, which of course further influence purchasing decisions. That 36 core Ice Lake could be cheaper than the 32 core Threadripper, but if PSU and cooler requirements push the budget significantly past the cost of the competition, or even your place of work couldn't accommodate hot, loud and hungry workstations, then is it worth it?
And what if Intel are stuck on the same process node for years, or show no signs of improving their technology? It can take many years at datacentre and enterprise level to validate new hardware, so if AMD (for example) continue to improve their offering yet Intel are struggling to compete by being stuck on the same process node and the same underlying technology, what do you do? Do you begin the validation process for migrating to EPYC? Or do you stick with Intel because that's what you have, hoping that their roadmap shows some significant improvement in 2, 3, 5 years time?
You should care about
how these components are made and how these companies create them because it asks bigger questions that should be addressed before spending your money.
This matters. Tech enthusiasts should care because this is supposedly where their passion lie. Purchasers should care because some knowledge of the bigger picture can and should influence purchasing decisions. Investors should care because it can raise red flags on future stock performance.
Ultimately, if what's going on underneath the hood of a computer isn't something you care about then perchance you're in the wrong place.