Properly done, redundancy adds to safety.

We're talking about useless information, not redundancy, even though I
suppose that's a form of useless information. Many people feel that
their transmissions are "appropriate length" yet others are
exasperated that the guy is tying up the frequency with irrelevant
details.

Since our goal in communications is usually to provide others with
information they need, they're logically the best ones to determine
whether or not our transmissions are "appropriate length." The AIM is
a good starting point and it emphasizes brevity and I suspect most
pilots value that as well.

Here are the steps I find useful:

1) Think about what you're going to say
2) Remove the noise words
3) Delete details the listener doesn't care about
4) Substitute standard phraseology
5) Press the PTT
6) Say it
7) Release the PTT

Granted, I don't go through all those steps on every transmissions,
but I do this analysis with students to help them communicate more
clearly. Over time, it becomes automatic.

Those pilots who say what needs to be said, no more, no less, are
wonderful to listen to.