Except they did get critical acclaim and sell huge numbers. Splatoon 2 likely has a 50% attach rate when you factor in digital. That is HUGE, and when Sony only had 20 mil consoles in the wild, it failed go come close to those numbers with any of their 1st party games.
He's not exactly right but he's not exactly wrong, either.
Let's imagine a Playstation platform without an IP more than two generations old. Could they pull it off? Yeah, probably.
On the other hand, let's imagine a Nintendo platform without an IP more than two generations old. Could they pull it off? In terms of quality, probably. In terms of sales, I have my doubts.
What I find funny is that you said in your previous reply is that Nintendo would be able to make games of quality, but you question if they would sell without being known IPs in your first reply. Then you go on to say that Sony would be fine without known IPs because of their quality...
So what is the difference? It seems to me that their is bias in your statement as the only argument you have is pretty much that Playstation is Playstation and Nintendo is Nintendo. You literally contradicted your own point.
Thing is, that is nothing but baseless assumption. There are no facts to support that Nintendo would not be able to pull it off.
There are two factors to consider however. At one point in time, those old IPs were new IPs. They did it then, so they could do it again if need be. The other is that no matter how you slice it, Nintendo makes good games. These are the only facts we have. Anything else is pure speculation most likely based on the opinion of the person making them, and not a reflection of fact.
"They did it once, they can do it again," is not a fact. If it were a fact, then the same sports teams would win every year, Sony could replicate the success of the Walkman at their leisure, Atari would be running the gaming industry, and we'd have far fewer developers go out of business. That's as much an assumption as anything else, especially considering the gaming environment is much different now.
Except that you forget that the Splatoon IP is a huge hit, Xenoblade continues to gain traction, and ARMs was far more successful than many like to give it credit for. They have already proven they can do it.
You do not think that they could not make a similar game to Mario or Zelda in a different setting with a unique plot and cast while having it sell? If Mario and Zelda did not exist, other new IPs of similar style would take their place. Quality sells games, all they have to do is show that quality. Otherwise Horizon Zero Dawn would have flopped.
To believe anything else is to fool yourself into believing what you want to believe, rather than what is true.