I love them too.
But just because some bands tune down a 1/2 step or a full step doesn’t make it lame.
Up the Irons!
Meanwhile, Ozzy is tuning down a FULL step, and many 90s bands are down a half step.
Tuning down isn't ipso facto LAME, but if I'm spending $150 for a ticket, I'd like for my singer (he's working for me during the concert) to keep himself in shape and hit the notes.
So yes. It's not lame. But....Tuning down is a sign of inferior conditioning and not caring about the finishing product. Age takes a toll, and we are all built differently. But if Bruce Dickinson can hit the high notes in regular tuning, some loser in his 40s can hit the gym and hire a voice coach.
Your mileage may vary.