It's probably more confusing since the DS had several iterations, first one in 2004, then the lite in 2006, DSi 2008, DSi XL 2009. And then the 3DS having mostly the same form factor probably made the design feel new for a lot longer.

Considering the switch is at the end of its lifespan, I’d say that’s pretty old. It’s like saying 7 years into the PS3 lifespan that the PS1 isn’t old. It’s old