Have to agree with fireflyBob. He did condition his argument by mentioning
superfluous R/T. I can't stand being in command of a flight when an FO makes a superfluous call without asking me and the controller comes back and rebukes him. Similarly, transmitting "standing by for descent"
without asking me if that's what I want, when clearly the controller has traffic blocking us below and 60 seconds of patience will see descent instructed by ATC anyway.
Low'n'slow if one crewmember calls field in sight to ATC and requests a visual approach without asking first his colleague if he agrees, that is certainly poor show.