I can see why someone would identify as "fiscally conservative", but not if they actually paid attention to what conservative fiscal policy really does.
The most "reasonable" version I can imagine is the kind where someone goes "things are fine for me, so let's just go with the status quo, maybe fewer taxes, that's conservative, right?"
But man... once you know anything about the history of conservatism or what it stands for in the US now... what can I say but yikes.
"Blessed are the meek, for they shall inherit the earth"
At least I think that's from the sermon on the mount. Raised Christian, but I've been a self identifying atheist for about 15 years at this point.