How has this decision affected my academic career? (1 year gap)
A year more or less makes zero difference for anything that's more than a year removed from the reason to take the break.

You worry unnecessarily about the issue -- plain and simple as that.

(Now, on the question to comparing yourself with Feynman, Erdos, and Einstein: If you want to stay sane, you need to at one point come to the realization that these can be idols, but not a status you can aspire to ever achieve. They lived in different spheres, and the number of people at this level is minuscule. I think a lot of us who consider themselves reasonably successful in academic life had, at one point or another, a small crisis when we realized that our contributions will not amount to much 100 years from now -- and eventually came to the realization that that (i) doesn't mean that we can't have a satisfying life that includes other things we're proud of -- such as raising children, or just inspiring students, and (ii) that most of science is actually many relatively small steps, of which we can contribute many.)