I disagree here I think, the DS was a fun iteration on an existing console (gameboy advance xp), but the Switch spawned a new classification of console. The hybrid console has pretty much taken over casual gaming, including Steam's Steam Deck, Microsoft's ROG Xbox Ally, and Playstation's Portal (PS kinda phoned it in here). While I don't think that hybrid consoles will replace normal consoles altogether, I do think the Switch has made having a handheld variation of your console a necessity moving forward.