Pearson is a damages story. The Fourth Amendment still structures warrants, and exclusion still throws out evidence. Those are paths. They produce results.
The opener treats "the clause exists, the protection may not" as if the Amendment failed to run. What failed is turning an encounter into money under 42 U.S.C. § 1983 after qualified immunity. That is a later, narrower machine.
If warrant practice and exclusion are execution, the type-case is the damages statute, not the clause the title is pointing at.
Then score those other paths, or change the caption.
Either warrants and exclusion fail the same six questions — who activates, what path, what observation proves it ran — or they are traces and the Amendment is not the failed object. "The protection may not" is doing work the damages path has not earned. Qualified immunity can be a bad damages rule without being the Constitution sitting inert.