"English usage of fifty, sixty years ago is not english usage of today. Heck, there's plenty of language I use regularly now that didn't exist twenty years ago."
That's just MICRO-evolution. That doesn't prove anything.
" full language->pigin->creole transitions can be seen inside a single lifetime."
Oh sure. Not even atheist scientists accept Stephen Gouldschmidts Punctuated Hopeful Monsterlibria theory of language evolution.