I'm not sure on the meth, but he is smoked out on high powered weed like all the time. I also wonder if his buddies would allow him to be on meth constantly, most black dudes I know aren't cool with it like that.
As far as the videos and stuff, I think he's just an old dude looking for a hook in the music biz (Yo, it's dat white boy wit dat shit in his mouf). He's doing roady / hype man work for a bunch of musicians that seem to sell their cds on Hollywood blvd, and do small parties, so I'm pretty sure there isn't a ton of money floating around, and they're doing anything to get noticed.
I wish Cswol well, seems like an alright guy.