The author is a Dutch journalist with no technology background. I wouldn't jump to get my information from this source. As a person who works in the UK semiconductor industry, I noticed 4 or 5 glaring holes in the article in just the first couple of paragraphs.

ARM is:

1) An ISA licensor, with no capability to create its own CPUs

and

2) Owned by Softbank in Japan, not European

ARM has the exact same problem via TrustZone. Different technical implementation, slightly different known capabilities, but fundamentally, still an unauditable, unremovable ring -3 subsystem that cannot be controlled by the legitimate, lawful owner of the hardware.

As far as cloud service servers are concerned, I don't think ARM CPUs have any meaningful marketshare, right?

You could start running things on ARM, but, almost certainly, that comes with a lot of extra friction. (Not saying that isn't a bad idea, it'd probably improve the ecosystem as a whole and flush out architecture-specific assumptions in server software. But it's not someting trivial to do.)