Tai Shan is the You Not Me of Rush. If MP had never said anything about the background of YNM, it'd probably have a lot better reputation than it does (because it's an awesome song with a great riff and catchy vocal melodies).
I don't know, man. We do have ears. You Not Me blew the first time I heard FII. Whatever MP said or didn't say about YNM cannot save the fact that it's a fucking dreadful and embarrassing song in the Dream Theater catalog.
Same with Tai Shan. I don't even know what Geddy said about it,. but I know it sucks.
I disliked Tai Shan the moment I first heard it in 1987. It and High Water were the culmination of a third straight dud by my favorite band. That said, I don't view it as vastly worse than most of the rest of the album.
As for You Not Me, when I first heard FII, New Millennium was a jumbled mess, YNM was better, but it was a bit of "WTF is this?!" After a lot of my favorite bands disappointed me in the early/mid-90s, FII was just another stab in my musical heart. However, as with Tai Shan, I didn't think YNM was any worse than most of the rest of the album, and I now regard it as one of only five songs on the album worth my time. I also liked YNM a LOT better one I heard You or Me.
All that said, both Geddy's and MP's comments about these songs made it "fashionable" to hate on these songs in a more vocal manner, and I'd be willing to bet there are casual fans who never gave them much of a chance because of the comments.