There's absolutely reason to believe that the effort can't be smoothly continued into digital realms. First, because interpretations of how existing progress applies to digital issues has consistently minimized privacy and maximized institutional power. Second, because it's not clear that government oversight or legal protections are actually working when they are obtained. We have a long tradition of using activism to produce legislative wins, but on digital issues we constantly see those wins being ignored or circumvented (e.g. illegitimate takedown requests and unapproved domestic surveillance).
I don't think giving up the political fight is a good idea, but it's always jarring when I see people say "crypto nuts should turn to politics instead!" The people pushing strong crypto have historically also been the ones seeking political progress with minimal results.
The fourth amendment establishes that "[t]he right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated"
Roe v Wade literally invented the legal right to privacy in the US: https://en.wikipedia.org/wiki/Roe_v._Wade#Right_to_privacy
More broadly, what I meant was that digital privacy, security, and ownership have been a consistently losing battle. The interpretation of how legal protections (the Fourth included) apply to computers has skewed towards state power in virtually every case, and victories on digital issues are almost all a result of technological activism rather than pure political work.