If that were the case, I think China would have the incentive to remove this from their own supply chains, they don't want to be excluded from world trade because of this stuff. But as others have noted, China was not the link in this specific instance, rather a European country was

You mean European supply chains. Devices were produced in EU (Hungary)

Devices were procured through Hungary, they were made in Taiwan

The parts maybe, but they were assembled and the explosives put in in hungary as of current information.

(And Taiwan is not China, but the 3. World war might be fought over the question whether they must be the same)

Well the classic route for electronics manufacturing is chips get fabricated in Taiwan/Japan/SK/America -> the PCB and other mechanical elements get integrated in China -> the finished product gets exported to the West. So you could certainly have the explosives adding process be done in step 2 regardless of if step 2 occurs in Europe or China.

I fear we might see an opposite trend in the "Global South" countries which now constitute >80% of world population

Why would they? It was likely our ally and NATO member Hungary who did it.

I don't think the current Hungarian government could be trusted with this. The only participation from Hungary was that the company selling the tampered devices was supposedly registered there.

But we all know that company was just a front for Mossad, and in all likelihood the devices never even touch Europe.