I never really understood the reason for seizing an electronic device anyway. Surely if something was important / secret enough it wouldn't be _on_ the phone. What are they looking for, exactly?
I’m sure there are tons of phones that have incriminating photographs in the default camera app, or incriminating text messages or saved voicemails or who knows what.
LEOs prerogative is to see how you are violating the law. Their view is to gather all data which could turn into evidence at a future point. This is that scenario and LEOs do perceive us all as 'baddies'.