How exactly is that related to their point about nations moving to alternative supply chains away from US based ones? They're saying the administrations actions are counterproductive, and driving away both money and influence from their allies.
And yes, most consumer goods from everywhere come from a Chinese supply chain ... but we're not talking about consumer goods here. We're talking in this case about military purchases. There aren't many western countries buying military hardware from China.
The supply chain of relevance is the critical software, infrastructure to run it, and ability to remotely kill it if an ally stops being an ally.
Nobody cares if their dollar store trinket was made overseas. And nobody would buy it if it was made in America because that same trinket would cost 5x.
People barely even care about their privacy these days, it seems.
But governments still seem to care about their military independence in the rare event they are at odds with an ally.