It's insane to vote for someone who does things you support?
To someone with full blown TDS, sure, a Snowden pardon probably won't sway your opinion at all. But think of someone who leans libertarian and maybe doesn't love Trump but also doesn't hate him, and remembers how the Obama admin forced Snowden to flee and revoked his passport, forcing him to stay in Russia. Seeing a pardon from Trump could move them into being a mild supporter.
A lot of people have one or two big issues that their political allegiance revolves around. It can be abortion rights, gun rights, taxes, the national debt, anything. If someone's core issue is fighting the surveillance state, a Snowden pardon would be a massive change in the landscape.
I wonder though, since Trump signed the extension to warrentless wiretapping, would your vote send a message that a pardon for Snowden is sufficient without institutional change?
Trump seemed to only care that section 702 allowed Carter Page to be wiretapped when the other side of the conversation was out of the country.
It's also always interesting to watch one's comment score quickly bounce up and down by several points multiple times over just 30 minutes. Apparently this comment is controversial, heh.
