Kind of fun to have around very occasionally, but I'm still seeing nothing to indicate anything more than "overpriced, non-essential toy." Would never pay good money for one.
(and this is from a household where the Steam Deck is absolutely an essential toy.)*
*edit, come to think of it -- said aunt has logged more hours on my Steam Deck even though we don't live together, thanks to the Jackbox series. I feel like there's a lot of good anecdata here :)