The OP might be trolling to make a point.
OP, you're not required to ask permission to use the logo, or the name. In fact, any cryprocurrency can use the logo and call their coin "Bitcoin", like anyone can pick up a piece of shit from the ground and call it a "diamond".
I think this one too.
Not sure what that point could be, but I wager that if the tshirt printing company didn't even realise Bitcoin wasn't copyrighted (don't get me started on the people who did obtain the trademarking for it in the UK!), then maybe this idea of awareness and adoption really hasn't got to the point we'd like. Mainstream awareness doesn't necessarily mean mainstream understanding.
Not only can anyone call something *cough cash* Bitcoin, some people even call Bitcoin by other names *cough core*.