Personally, I've always liked Punk, and I can see where he's coming from.
Not to drudge up the Staph story yet again, but I would think that a doctor working for a wrestling organization would be able to tell it was staph at a single glance.
Using part timers: I can see the WWE sending in part time legends to push buyrates at big events, but when it's Raw or SD, or something, they're just eating TV time. That's for today's guys to get their names out there so one day they can be at said event. And furthermore, said part timers would be better used to get guys over. I'm not saying "lose", but maybe have a solid match with someone who's not "The Guy". If you think that wouldn't work, I'd like to direct your attention to the Shield.
Ryback: The fact that Ryback is the most unsafe worker in the WWE today has been well documented. Moot point.
Rusev: CM Punk doesn't give a shit about the younger talent. So much so, that he gives sage advice to one that many believed wouldn't even last this long. Name one established guy in the back that would have told him all that shit. Go on, I'll wait.
I'll elaborate further. Work calls.