Every one of us out here listening KNOWS what the station's call letters are
and KNOWS what frequency it is on. We don't need to be told 37 times every 10
minutes.

I deduce from this that you've never seen a filled-out Arbitron diary. If you
actually worked in radio, the sight of a filled-out diary would scare the bleep
out of you. There are many stations that run more call-sign and/or frequency
and/or slogan mentions than your example, and yet diaries continue to contain
error after error after error. I have seen call signs absolutely butchered,
dial positions listed as "right next to 92 on my radio" or "my fifth
pushbutton," and station slogans that bear no resemblance to any station in the
market being surveyed. The fact that stations actually get credit for some
diary-keeping listeners I can only ascribe to some sort of miracle. Every one
of you out there listening does NOT know the call sign or frequency, in fact
more listeners don't know than those who do know.

Most radio listeners are not hobbyists who follow radio and know all its ins
and outs. They are casual listeners who have it on in the background, or are
listening for the programming, and don't give a hoot in h*ll what the call sign
or frequency are.