> Had Snowden simply revealed unconstitutional domestic mass surveillance programs, perhaps he could be pigeonholed as a whistleblower.

Multiple former officials did this and society largely didn't believe them and didn't care. Thomas Drake, Bill Binney, and others came forward through the appropriate legal channels and lost their careers, faced prosecution, and absolutely nothing changed.

Legally, you're technically correct. Snowden is a fugitive. That doesn't change the fact that he fundamentally changed the way we think about privacy and the government's role in digital privacy for the better. James Clapper lied to Congress weeks before Snowden's revelations, yet he never faced perjury charges. That's what a broken system looks like.