The problem with your analysis is that investigators' illegally gaining access to evidence does not in itself necessarily trigger the suppression-of-evidence re

The problem with your analysis is that investigators' illegally gaining access to evidence does not in itself necessarily trigger the suppression-of-evidence remedy for Fourth Amendment violations. The suppression remedy is reserved for constitutional violations. So, yes, whether or not the evidence should have been suppressed crucially depends on Ulbricht's relationship with the server and whether he had a reasonable expectation of privacy in its contents.