I tend to agree that it is baseless but not the for the reasons you mention. I don't trust Apple or Google with my personal data. But from what I understand of this protocol, no personal data is shared with Google or Apple, only a randomly generated identifier IF you elect to declare yourself contaminated. And this identifier has no other value to anyone other than to notify the holders of smartphones that have been in close proximity with you over a limited period. What the article is saying is that they don't trust big tech to stick to that protocol.
