I am wondering why Radio shack has gotten away from aggressively
marketing scanner radio's?

I don't know
about your Radio shacks. But the ones around here don't even have them
on display! They are in their boxes behind the counter

some of the Radio Shacks around here don't even have them at all!!!!

and the one that does have some only had one model they carried which was a
RACE scanner.

Some lady came in looking for a scanner to hear the police, fire, and medical
services on, and the clerk tried to sell her a RACE scanner as one.

Luckily for her, she didn't fall for it.