Backlash against Modest Mouse would be criminal. I hate it when artists finally get their due in the mainstream and then suddenly become victims of knee-jerk scorn.
It's like when a quality non-mainstream artist changes in order to become more mainstream-friendly/marketable, we all call them sellouts. That's ok with me. But then you have successes like Modest Mouse who have always made music within their own particular style, and the mainstream ended up coming to them.
To bash MM now that they *gasp* have a video and get some play on the airwaves (God I wish I knew what airwaves those were..radio, particularly rock radio in San Antonio is fucking MIND NUMBING), when they've never compromised their art, would be the antithesis of being a music fan. Though GNFPWLBN is an evolved form of Modest Mouse' sound, it's only as big a shift as TMAA was from TLCW, and while it may be slightly more palatable to mainstream tastes, it's still chock full of the half-cocked stuff that makes MM who they are (Issac's off-kilter lyrics and marble mouthed white trash delivery).
I'm not saying everyone should like their latest album per se, but if you're gonna bash them since it's release, bash them because you think the album sucks, not for being "sellouts" etc. Because Modest Mouse have done nothing to shame themselves in their long road to any stitch of national recognition.
For the record, I too think 'Polar Opposites' is great. A great song for a bar band etc