Wrong.
I am a bit of a pedant when it comes to the English language, though my speling ain't always gud!
Many people have substituted "of" instead of "have".
ie;
"I should of seen that" instead of "I should have seen that"
it is often needlessley added,
ie;
"I jumped off of the step" instead of "I jumped off the step".
But one great aspect of the English Language is it's natural evolution, incorporating words from other languages, ie; barbeque forn Native American, bungalow from India, and leviathon from Hebrew.
It is a changing language, built from various European and Scandanavian languages.
So maybe some changes are not such a bad thing.
It also adopts words and forms from other English speaking countries, ie the USA and Australia.
It can be negative in some ways, as many languages are being eroded by the English language use in technology and industry, so it's probably not good to be too prescious about it, as other languages suffer due to it's world wide use.