The problem with your thinking is that is universal throughout the league. The majority of players busted for PED's are backups/fringe starters. Not a whole lot of high profile stars have been caught.
No one has proved this is a "competitive issue' that isn't common throughout the league that's why I don't buy Brewer's logic.
Well, nothing can be literally proven about a subject like this - even by individuals privy to the inner workers of our team. It's all people theory which is as much art as it is science. I maintain the "competitive issue" may be more prevalent on our squad than those with older players and coaching staffs using more dated and rigid methodologies. This isn't because we talk about or emphasize competition more or anything like that but because we're better at acquiring and training players who fit what we mean by all that talk about competition. If this is true and the way we do things does lead to increased PED use, it's still not really an issue as much as it is a hiccup on an otherwise progressive process.
In the end, we don't, won't, and can't know enough to say anything with any realistic conviction. We can only make approximations. This is the mistake Brewer makes in regard to accuracy but if he instead wrote or spoke about how vague of an issue this really is, he probably wouldn't maintain as many listeners or readers. There's just too many consumers that want things made to appear simple even when it's anything but.