Sounds like a massive overreaction and abuse of century-old laws.

If those devices are so bad, why not forbid selling them in Italy, instead of punishing people who buy them completely legally. Imagine going through all of this because you bought a laptop and posted a review online.

It’s difficult to prove anything like that. From independent research we know that Intel, and likely AMD too with their counterpart, can remotely control your PC via IME. But they’ve never done that yet or have done so very secretly, because then a lot more people would know and that would be problematic.

Personally I think it’s reasonable to suspect that Microsoft has full capability to severely cripple your system at any given time. Maybe not ‘brick’ as that may be impossible without proprietary hardware inside the machine. However, even a simple Windows installation can mess up your UEFI. Given that, do you think that all those millions of fully secret lines of code cannot render you unable to use your PC, even if just temporarily?