It might sound anally retentive but often the ones with the sloppy radio calls are also the ones that turn up 5 minutes late, dirty shoes, unironed shirt, sloppy SOPs, poor checklist knowledge, more interested in flying fast than efficiently, and constantly complaining about management.
I know who I'd rather have up front when the turd hits the fan.
However back on topic "Caution wake turbulence" in a well-considered situation sounds to me like good airmanship.