Yep, it's pure hypocrisy. Either you're bother by sequels or you aren't. And if you evaluate it on a case by case basis, you have to argue specifics and not just throwing "blanket statements". Moving "goal posts" to fit their arguments only make this hypocrisy more obvious, specially when they use "reasons" that are completely besides the main point or entirely subjective.
Given that the entire industry is constantly relying on sequels sales-wise, that many of these sequels are among the most acclaimed games of each year (by both gamers and the press) and that all big publishers have their own examples, I don't see why Nintendo is often singled out as being guilty of this practice. They certainly aren't the ones that release them more frequently, as they rarely release sequels on an annual basis like some do now.
In addition, and whether someone cares about them or not, Nintendo has created quite a few new IPs in the last gens, despite probably being the publisher that has the biggest number of successful ones. And saying things like "casual games don't count", "if it's not released in my country it doesn't count" or "if it's not popular it doesn't count" are clear examples of moving goal posts.
Here are some of them, through this gen:
On Wii and WiiWare: Wii Series, Xenoblade, The Last Story, Disaster: Day of Crisis, Pandora's Tower, Zangeki no Reginleiv, FlingSmash, Endless Ocean, Captain Rainbow, And-Kensaku, ThruSpace, Rock N' Roll Climber, You Me and the Cubes, Eco Shooter: Plant 530, Line Attack Heroes, Snowpack Park, AquaSpace, MaBoShi: The Three Shape Arcade.
On DS and DSiWare: Soma Bringer, ASH: Archaic Sealed Heat, Jam with the Band, Another Code/Trace Memory, Nintendogs, Osu ! Tatakae ! Ouendan/Elite Beat Agents, Brain Age, Big Brain Academy, Jet Impulse, Chousoujou Mecha MG, Electroplankton, Meteos, Fossil Fighters, Hotel Dusk, Zekkyo Senshi Sakeburein, Style Savvy/Style Boutique, Metal Torrent, Reflect Missile/Trajectile, A Kappa's Trail.
And there's also Steel Diver on 3DS.
Furthermore, there's plenty of others that were created just last gen, around the same time as God of War or Halo for example, which are still considered "recent" by many. A few examples could be Pikmin, Bit Generations games (later becoming "Art Style" on Wii/DS), The Legendary Starfy, Golden Sun, Rhythm Heaven/Paradise, Chibi-Robo !, Geist, Magical Vacation (prequel to Magical Starsign) and Drill Dozer. Eternal Darkness could also count as one but I'm not sure if Nintendo holds the rights to it.
Anyone that claims that Nintendo is just Mario/Zelda/Pokemon/etc is either an ignorant or a troll, no different than anyone that claims that 360 only has FPS games or that Sony only has Gran Turismo and God of War. We all have our preferences, but opinions are not facts, so why use them as such ? Like pretending that some games don't exist because you don't care about them...
By the way, as a side note, I also find it ridiculous that many of the self-proclaimed "hardcore" gamers that usually complain about Nintendo or dismiss it because of being "kiddy" or "casual" rarely live up to their own elitism. Like for example, not knowing about Fire Emblem, Sin and Punishment or any of the less popular IPs from Nintendo, not to mention other 3rd party ones.
But I'm not really saying anything new here anyway...