That doesn't make sense. Switch is selling just as well or slightly better as PS4 with launches aligned. PS4 gained momentum. Consoles never have their best years at launch. This is a bad comment.
You shouldn't be counting chickens before they hatch. We don't know what kind of legs the ns will have. It could turn out to ha ve better legs than the ps2 or it could fizzle out quicker than expected. Sony doesn't need to risk any resources on something that's still experimental and might not work for them (if sony tried it) when they could use those resources on ps4 games and ps5 dev/games.