Is it though?
The article list an m1 ultra with 128gb of ram, so 6000 or so. Not sure what the target market for this is, but the intersection of "4000 does not cut it" and "I don't need high performance computing, clusters, multiple GPUs, no ECC,no more ram than that" to me seems almost empty.
These are close to 2k for CPU alone AFAIK.
I must admit though I am biased as I am yet to find a fault or reason for an upgrade in my original M1 machine, and I had dual xeon workstation prior to that.
What if I just want to buy a thing. And then later also be able to sell it maybe.
Power draw for one; it applies to desktop PCs as well. Electricity isn't always cheap.
https://www.notebookcheck.net/Lenovo-ThinkPad-X1-Carbon-Gen-...
Also just throwing out there that the X1 weighs about 500g less than a MacBook pro and a powerbank is about 500g.
That said, if you are fine with weight and battery life is important, 2015 was the year to be:
https://www.anandtech.com/show/9623/the-lenovo-thinkpad-t450...