That's because it's true. Nintendo doesn't really create that many new IPs in a gen. They make new additions to their main IPs and make off-shoots of those. It works for them but it alienates gamers who want new IPs or more mature games.
And yet how many I.P's that are created by the other companies have healthy lifespan? Half the new I.P's created are never heard of again or die off within two generations.
And yet even something like Metroid chugs along pretty well, and there is interest in things like F-Zero (They did try to set up a game with Criterion at the early days of the Wii U), and Star Fox (Star Fox Zero was a thing, even if it wasn't super successful it was an attempt to bring it back up).
The Democratic Nintendo fan....is that a paradox? I'm fond of one of the more conservative companies in the industry, but I vote Liberally and view myself that way 90% of the time?