Oh, 50 miles? Funny, I thought 10 was the cited number, which was for rural areas(from USDA, anyway). And no, not bias, just healthy skepticism. Whenever someone makes assertions that don't match your observations, you should investigate them. Observation is the starting point for everything. If someone has conclusions based on observations, and the supporting facts they give for these conclusions are wobbly, why not say something? That's what internet forums are for anyway. Discussion and cat pictures.

There are whole neighborhoods where there is not literally not a single fucking zero grocery stores in the whole neighborhood.

And the term "neighborhood" is not a really meaningful term. With my use of that word, I'd question where you live that that's a thing at all. Where I am, the smaller towns have the stores in mostly one central area, so zero neighborhoods have a grocery store, and everyone from the town shops at that location. For the cities, the areas that tend to contain the bulk of housing also don't have grocery stores. There's a store that everyone from an area visits, and that area contains several neighborhoods. These too, are grouped together with other buildings, like a home depot, office max, and things like that, such that it's a similar dynamic but with the housing much less spread out.

That is not a "small issue". You're just an asshole. Or phenomenally stupid. Or unwilling to accept the possibility that such a situation could exist in America. I'm not sure which, but it's gotta be one of the three.

Oh, I'm sure a place where it's hard to get food exists. But I really don't think it's a crisis that some such places exist, and I think you exaggerate how pronounced the problem is, making it not worthy of the word "crisis".