It’s a funny gimmick but all the competitors already have support mouse and keyboard. You can also use them in some games like Sims 4 or Cities: Skylines.
But guess this mouse mode could also encourage 3rd party developers to add mouse and keyboard support for their games on consoles.
There are also plenty of decent Zelda-likes out there from small indie studios all the way to triple-a studios. Sony should really make one of their own looking at how well the managed to but pretty much everything Nintendo all at once to Astro bot.