If you could remove one person from history who would it be?
You're not the only one. She can not sing at all she just screeches and wails.
Then Alfred Russel Wallace would have published in a vacuum and gotten full credit for it. You and yours would just be complaining about "Wallacism" instead of "Darwinism".
The Theory of Natural Selection was arrived at by honest observation and lines of evidence leading to the formation of the concept are everywhere, in every scientific discipline. Even if we hadn't come to it before the discover of DNA we certainly would have realized it shortly after that point since DNA is full of clenching proof.