No one owes you anything if the CPU functions exactly as advertised.
If you don't want a platform-secured CPU, don't buy one.
If you don't want a platform-secured CPU, don't buy one.
As Chris mentioned, this is exactly what Big Corp™ wants. They'll be the ones buying it too, and would likely pay extra for such a feature. They're the target market for these vendors.
Thus, sure, for those looking to buy second hand, this is indeed advertising irreparable damage. But for Big Corp™, this is advertising security (in my opinion quite rightly so), and ensuring their data isn't stolen.
Admittedly it feels like AMD could have created something that allows the chip to be reset providing you have the original signing keys.
...the problem is what happens when you buy an unlocked CPU.