You are talking through your arse, and any "proof" you may have (i.e photos) is fake. Brian never owned, played or even touched a guitar in his life. If you ACTUALLY KNEW your Queen history, you'd stand up and tell the truth....Milli Vanilli were the real music behind Queen. Behind the scenes, they sang, played guitars and drummed as well. FFS.
Yes Brian was aware he had a guitar.
However it took John's even more awareness to build an amp (which HE, not Brian, named the Deacy amp) for Brian to plug into so that he could hear his guitar.
Nuff said.