I am unable to comment on who may or may not be Banksy, but anyone described as 'good at drawing' doesn't sound like Banksy to me.
BanksyArt is not like other culture because its success is not made by its audience. The public fill concert halls and cinemas every day, we read novels by the millions, and buy records by the billions. 'We the people' affect the making and quality of most of our culture, but not our art.
BanksyI wouldnt want to be remembered as the guy who contaminated a perfectly legitimate form of protest art with money and celebrities.
BanksyGraffiti is one of the few tools you have if you have almost nothing. And even if you don't come up with a picture to cure world poverty you can make someone smile while they're having a piss.
Banksy