Was Yeshua that uncommon of a name? You're setting the bar pretty low here.

Not that uncommon, no. I'm exaggerating for effect, but the point should still have carried if I'd used "Yeshua ben Yosef" or something even more specific: if you can't predict anything about the character from the name, the character isn't meaningfully based on the name's original bearer.

That being said, my understanding is that there's a strong scholarly consensus that there was a Jew named Yeshua who lived in Galilee, founded a cult which later became Christianity, and was crucified by the Romans controlling the area.

There also is a strongly scholar consensus that anthropogenic global warning is occurring, and yet plenty of LW census respondents put in there numbers not very close to 100%.