Europe has a few fabs around that definitely can do at least 90nm parts.
While I wonder if that's actually true, it wouldn't help. Nexperia, the supplier at the heart of this debacle, makes power and analog stuff: GaN FETs, bipolar, power diodes, etc. These aren't ECU MCUs. They're big power devices, using specialized materials: silicon carbide and gallium nitride, for example. You can't make these in just any old 90nm processor fab.
It's great to see all this. Consequences of the the romper room mentality of EU technocrats and citizens dwelling under the umbrella of security provided by others for generations, inventing fake problems for themselves. Pretending to be—and being politely treated as—peers, the whole time. That's over now, and it's glorious. Time to set aside the holier-than-thou vanities and be real: you can no longer rely on the rest of the planet doing all your dirty work.