Who care which arbitrary gen number a device has? All that matters is if they still get support.
3DS, Switch, Xbox One, PS4 and PS4 Pro are current gen: they all get a lot of new games, the hardware is still advertised and most software/network features still work
DS, Wii U, Xbox 360, PSP, PS3 and Ouya are legacy gens, where the support died or almost died.
I still count the Vita as "current gen" due to the remaining (third party) support, but it is on the verge of becoming "legacy gen" due to the lack of first party support + advertising and some cancelled features.









