You asked for evidence and it is abundant enough that clicking a random page gave it to me. I am actually kind of stunned that you seem to not realize this is axiomatic.
edit: You're trolling right? You aren't actually THIS clueless?
Don't use words you don't understand. Your "theory" is immediately disproven by the fact that the bitcoinstore has already received over 200k USD in orders...ALL IN BITCOIN.
http://blockchain.info/address/1JqjoFF8QZwidrTbfnihGHDeu16pbLia1qIf you had actually read the thread instead of "randomly clicking" it, you'd know this.
You are excellent evidence for much more stringent newbie requirements.