Language is dynamic - changing all the time. I agree that we don't own it, and like to stick to our ideas of how things should be, but we needn't deride other countries' English use. Be amused, yes, of course - I used to teach a module about the evolution of language to Y7, and they would make an Anglo / American dictionary, giggling as they worked. Then I took a copy to our friends in the States, and their children giggled too.
We travel a lot to the States, visiting close friends and exploring; I love the country and the people I have met - ordinary people like us.
However management jargon is another thing altogether; it involves twisting language to suit purpose, rather than developing it. It is bland and cliche ridden. So there I am, being derisive myself. Ah well...