Smoak is having a better offensive season, has higher upside, better ratios (BB%, HR, etc), and provides more defensive value. I don't have the time to look at all your examples to see who was benched in favor of those guys but I'd be surprised if it was a better option benched in favor of a back-up catcher that couldn't hit in any of those examples. The only exception might be the Yankees since "respect" means playing a vet until he retires, but even then I'd be surprised.
FYI, if Gibbons played Navarro 2 times a week like a normal back up catcher should, I wouldn't be complaining. No one else would either. Considering I'm not the only one who hates Navarro's playing time, maybe, just maybe, the criticism might be valid??