That's a very fair point. There's certainly nothing bad about making privacy conscious technology choices.
I also think that the very URL of this project - http://prism-break.org/ - invokes a certain over-focus on NSA's PRISM. As a UK citizen, however, my Internet traffic itself is being stored and monitored by GCHQ. So to me it seems especially futile switching from Chrome to Firefox, or from Google to DDG, or from Facebook to Diaspora.
Unfortunately, https://prism-break.org/ was registered before Snowden's revelations about Tempora. I'm working on adjusting the site's wording to apply equally to all governmental surveillance.
But let's also be realistic -- if this technology reached mass adoption, the predictable outcomes are either 1) The government outlaws it or 2) They figure out ways to work around the security
Mass adoption is a bulwark against legislation, not a promoter of it. Eg. alcohol is legal because it's popular, not because it's safer than drugs which are illegal.
But even so, a large percentage of developed countries did prohibit alcohol for a few years, both despite and because of its popularity, and it took years of people being turned into criminals before those laws were rolled back.
Popularity provides some protection, but it also creates a more desirable target for legislation amongst those who oppose it.
If everyone used tools like this, it would be much more difficult for governments to trample on privacy rights. It seems like a worthy goal.