Well the ones who aren't shouting "fad" are carefully building their hardcore gamer ivory towers from which they may piss down with disdain on anybody who dares start playing videogames now, 10-year-old or no.
3rd parties seem to resent that Nintendo is building their new empire with their own two hands, much like they did with the DS, but their resentment is fostered by the reality that they had opportunity to get a berth on Nintendo's Gravy Train both times and elected instead to proselytize on the dangers "not using all the graphics ever" and "children having the gall to play videogames" BOTH times. Unfortunately for them (and particularly in Japan) their greatest fear of begging Nintendo to let them program for the Wii is quickly becoming a hard reality that they'll have to accept, particularly in this age of rising development costs and less avenues for sale (The PC market being basically dead and all.) Maybe they'll have to learn to deal with lower end graphics like the seemed content to for 4 generations in a row.
Game journalists make no bones about slamming the Wii, particularly online ones, whose wrath is quickly earned by not stroking their massive egos with PR packages and advertising revenue. Nintendo usurped them and went straight to the consumers and gamers. They are also leading the charge in the gamer "schism" between those labeled "casual" and those labeled "hardcore" by acting all indignant whenever Nintendogs or Brain Training are brought up. The "Casual" and "Hardcore" labels are an extension of the "Nintendo is for children" label, only re-engineered to deal with the massive weight of the 5-29, over-30, over-40, over-50, and 60+ markets that seem to be all Nintendo's at the moment. No longer an ageist track, no it is an evidence-less based judgment call based simply on the games you enjoy. Thankfully their influence appears to be crumbling at the seams, which will require new journalists with less prejudice to take over for them.
But as for me, DS in one hand and Wiimote in the other, I'm happy as a clam, particularly with the DS. The full weight of the DS's library as well as the most creative games ever to grace any console or handheld, Trauma Center in particular, make it quite possibly the best game system of all time. Not that you'll hear that from the games press, but you'll hear that from the gamers' lips, which is good enough for me.