It's explainable by looking at polls for how Americans feel about major institutions. Gallup did one for various public and private institutions: https://news.gallup.com/poll/394283/confidence-institutions-... and what they found is the only two major institutions that maintain a universal (across political affiliation and other demos) positive trust rating are small businesses and the military. Everybody else either varies a lot or just has universal low trust.

You'll note from this source that "big technology companies" score above all 3 branches of the federal government. Part of this is how partisan politics has become, so one party will have a majority of people expressing trust in an institution their party controls, the other hardly anybody, resulting in a fairly low score for the presidency and supreme court. Congress, it seems, is so universally despised it doesn't matter who controls it, it sits at single digit trust percentage.

In light of this it becomes understandable why somebody would be fine with big tech spying on them at the behest of the police (another institution with pretty high universal trust, though it does vary depending on political affiliation a bit it's considerably higher than any federal institutions), yet react with suspicion from something set up by bureaucrats from a federal agency.