That sounds stupid to me.
Theres just no way a "consistant" experiance will be around on 3 consoles, if a game is made to push the hardware of the PS5+XSX.
Switch hardware is too weak to do that.
The only way that happends, is if you make a very non demanding game (2D scroller like indie game), something like that the Switch can play the same as the others. If you make a full blown 3D game, that pushes the new consoles..... you wont get a consistant experiance on the Switch.