Its meaningless to consumers, we already went through a number of years where Switch saw consistent growth, everywhere outside of Japan & Asia this growth didn't impact Playstation or Xbox sales.
This basically means that Nintendo was able to differentiate itself from the twins and was bought alongside them or by people who aren't even into gaming. From a consumer perspective, the new generation of systems isn't competing with the Switch, thus talking about Switch 2 needing to release in order to compete with them is nonsensical.
Ok I understand what you are saying now. While I would certainly disagree that generations are meaningless to consumers, if that were try there would be no excitement for the next gen of xbox and playstation, I do agree that Switch isn't really directly competing with them - but that is very different than saying generations don't matter to consumers. Switch is a hybrid that has an entire library of games that will never come to the other systems, while the other two are very similar that get very similar type games. That has nothing to do with generations, but I mean I get what your intent was.