I'd say that's partly true. They do have DLC. But it would seem there is a drastic difference in its implementation. DLC on Nintendo devices - especially with respect to their first party properties - doesn't seem to beat the user over the head with it in the same way as other publishers and developers. And I have yet to see on-disc content held hostage. Full - disclosure, I'm not immensely familiar with every recent Nintendo title so I could be wrong in thinking this kind of brow-beating never occurs with Nintendo when it comes to DLC; but from what I have observed, if it does happen, it happens rarely enough that they correctly have the reputation for not being counted among the far more obnoxious peddlers.
Additionally, from what I've observed with respect to DLC from Nintendo, is that it is not essential to fully complete a game. I've not seen any DLC that makes the user feel that they must make an additional purchase, in order to experience the game as intended.
While the DLC is indeed there, it certainly does appear that because of the lack of prominence of it being referenced as you interact with the game, and because of the lack of on-disc content being held hostage to squeeze more money out of the user, and because of the lack of content needed to fulfill the experience as intended, Nintendo - moreso than others - still feels like a company that lets the user buy and play a game with little to nothing else to actually worry about.
That aside, this guy... seems like a jerk. Even if I agree that Nintendo could improve on many things including creating new first-party ip's, and even if I agree that they could do well to be more aware of what and where their competition is, he comes accross as an obnoxious, tasteless, hyppocrite.