> If you knew Ruby and not the Python, the whole scenario would have been flipped.

That's why popularity matters. The odds that any random kid already has experience with Python are far greater than him knowing Ruby.

I get the point, it's not completely invalid. And still, calling Rails "obscure" is a stretch. In web dev world it's still a pretty dominant framework. There shouldn't really be any problem to hire Ruby guys afaik.

This was the argument for php in 2010.

Not popularity, but familiarity. You don’t have to play the odds if you already know what tools your team has experience with.