You’re way off about when it’s illegal to start destroying your property that the police want to seize during an investigation.
Whatever the American legal system may say, a couple of thugs with no warrant conducting searches and seizures of data is a blatant violation of the Constitution's intent. This is the sort of behavior Americans used to rightfully condemn.
I'm all for privacy and find this seizure stuff really wrong but to me it just looks like another form of "orange man bad"
You're also essentially saying the same thing I did, because I'd argue most people already have a non-neutral stance on the subject.
Have you read United States v. Flores-Montano? The border search exception (which I disagree with) is pretty old. Can you find an era in which Americans in general found it objectionable or were united in rejecting its application to data?