Ex-AC/DC frontman Brian Johnson seems to be doing well these days, or at the very least able to hear without any issues. I say that because he recently got up on stage with Fleetwood Mac guitarist Mick Fleetwood at his bar Fleetwood’s On Front St. in Maui, Hawaii and covered Nat King Cole's "(Get Your Kicks On) Route 66."
Considering both of the aforementioned's talents, it's no surprise the cover is great, but this also lends a little credence to people being leery as to why Johnson left AC/DC. Dude has been performing just fine lately, so clearly the hearing loss wasn't a permanent thing that led to his getting fired from the band.