Statement is definitely true. They just don't have in-house talent that's well versed in shooters, WRPGs and other games that sell well in the west. And outside of Fire Emblem they don't have much in the JRPG front either.
Without first party exclusives like Halo, Gears, Uncharted etc. they just can't compete with MS/Sony for that key 18-35 western male gamer market. Getting third party ports won't help either as the softcore gamers that dominate sales will just buy those on the Sony/MS machine they got for the big first party games (or because their friends all play CoD, Madden, etc. on that platform).
If Nintendo is going to thrive they have to offer something different that can either (or both) rake in casuals and get softcores to buy their machine to complement their main platform.
There's no way, for instance, I'd buy both a PS4 and X1 next gen as the game libraries will be too similar with most things being multiplatform these days, and most exclusives I play being shooters that have reasonable equivalents on the other platform. But I could possibly get an Wii U down the road if there are enough games I want as Nintendo games are quite different that the exclusives on Sony/MS. Probably unlikely as I doubt my gaming time will pick up, and I just can't justify a second console when I can't even keep up with games on one anymore. But if I do, I'd consider a Wii U to complement my PS4 once I pick one up, and not an X1.