That is correct, George, but it's worth to mention that Steam Deck was also never advertised to be capable to push heavy demanding games at a billion fps, and some people are doing specifically that just to complain how poorly performs.
Is it absolutely exceptional to play Blasphemous or Ori and the Will of the Wisps or Bramble The Mountain King or... you get the point - yes it is. Is it great to run UE5 games, or Battlefield 6 or even Noita (extremely demanding game despite pixel-art appearance, it can choke even the i9 14900K)? Of course not.