"His recommendation is ear defenders as they cover the bone too." - you do know that the whole body is a conductor? Or should I say, your doctor? Tap the top of your head and tell me you can't hear anything.
Tinitus - despite being strong correlations to musicians playing in loud environments, factory workers in loud environments... lets just say it's just as likely to be neurological or blood pressure. Man, there's some bizarre thinking. Whilst it's true that nobody understands the full manifestations of tinitus, only a fool would look at the statistics and just go meh, just a bit of blood pressure.
I reckon you should get a new ear quack.