Yes, I know what you mean. I too thought "we play every/any-thing" was a format of the week. And of course, Simon doesn't play everything... but they do a pretty good job of playing "everything" that would be popular with the 35-54 year olds.
I started listening to Simon because my brother likes it. At first I thought it was strange that a variety format station didn't sound like DAVE-FM in Atlanta, but then I realized Simon, unlike Dave, isn't AAA.
To me, Simon sounds more like a classic-hits station CALLING itself variety. Although most classic-hits stations nowdays are simply classic-rock stations that lean way more mainstream. Not that there's anything wrong with that (The River in Atlanta, BIG-100 in DC, The River in Raleigh), those stations sound good. But classic HITS used to mean more than just guys with guitars hits.
I'm over 50, I'm involved in CHR via the 'net, and I like Simon. I also like WKZL. But when I'm in the mood to listen to Simon, it doesn't bother me to hear different genres. The Kinks, AC/DC, Peaches & Herb, Barry White, Stevie Nicks, Paul McCartney... yes, different genres, but so? I like them all. Would I expect somebody who only likes classic rock to like them all? No. Would I expect somebody who only likes soft-AC to like them all? No. But I'm not like that.
-Amos