Change is difficult. I know, it's a cliché, but clichés are based in truth, and this one is definitely true. I remember feeling like Geddy might be getting just a little bit too much spotlight. Obviously as lead vocalist, and usually the only vocalist, he's already got a built-in minimum time in the spotlight. Musically, the bass, guitar, and drums always had a great balance. But adding keyboards, something Geddy obviously was into, upset that balance. They were becoming "Geddy Lee and Rush" -- I even heard them announced that way on the radio a few times -- not cool.
To say that the guitars were pushed down in the mix in favor of the keyboards is a bit of an oversimplification, but that is what it came down to. People liked the balance the way it was. People loved Alex's guitar sounds and weren't really interested in the "new Rush" featuring walls of keyboards, especially since Geddy wasn't a particularly gifted keyboard player. Sure, his patches were great, but he didn't program them, and despite the occassional lead line, it was mostly walls of Oberheim, often burying Alex's amazing guitar sounds. I can understand Alex being discouraged by this. Hell, I was too, and I'm a keyboard player. I wanted to like SynthRush, but it took a while.
As it turned out, Rush was once again ahead of their time. The 80's were definitely the decade of analog synths. Most of the time, if you pull out a song from the 80's with keyboards, you can immediately identify it as 80's because of the sound. Somehow 80's Rush doesn't sound dated like that to me. Or maybe it's because I just hear Rush and don't hear the "80's sound".