Mental gymnastics. And I don't care how many consoles Nintendo sells. That is directly proportionate to the cultism of the fanbase, not the premise that higher specs aren't relevant or necessary.
Switch 2 needs to perform at PS4 Pro specs without stutters or dips or any issues at the bare minimum to interest me. It should really perform at PS5/XSX levels. And I'm no graphics whore or videophile; I just want the best possible performance out of a console while enjoying the visual benefits of current hardware.
It will also attract more third party mainstream titles which will only bolster Nintendo sales, so Nintendo wins and the customers win.