Well, if it weren't for EoFF, I don't know when I would have learned about Zelda. I certainly don't read about Zelda in the papers very often and he just looks like an elf, doesn't he?

Also, Mario is far, far more famous than Yoshi.

All I'm really saying is that it's very possible that someone would never have known Yoshi despite being a game developer. It would be a fairly rare thing, but it's absolutely possible.