Oh - one of those articles. More conspiracy theory...
I like one of the comments underneath the article:
"I have a guitar tuner and recording software that allows me to 'tune' to any frequency. 440hz tuning has treated me just fine for 39 years."
If you look at the history of tuning in Europe over several hundred years - based on tuning forks from the period - you'll see large variations in pitch well below and above 440Hz. You can draw your own conclusions from that - I know what mine are. :-)
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sj