Board Thread:General Discussion/@comment-43860040-20190919052920/@comment-38078079-20190919110407

Well I did use Penny Hofstadter but that was problematic for some strange reason.

I can only guess their reasons, but I'd assume because it's factually incorrect for most of the series. It just wasn't her name. You'd typically put that as a name when you can add a "née" to say what preceeded that name. I believe one of the admins said something similar, in that for most of the series her name was unclear (but definitely not the same as Leonard). It'd potentially be confusing or misleading yo newcomers on articles otherwise.