@DarkOverord on the other side of this, look at Flint in gen 4. Explicitly stated to be a fire-type specialist, but only two of his pokemon are fire type

though sinnoh only *has* like two fire types before the national dex, so.
-F

@Felthry Yeah that's the thing about Flint, he was kind of, stuck with a poor lot before Platinum lol

As opposed to Steven where if they were a Steel type specialist, they could've had more steel types on team that were available in Hoenn (5, and would have to fill in a 6th)

It's kind of reiterated in his Gen 5 appearance where like I say, he's actually mostly a rock type trainer (3 Fossils and Aggron!)

@DarkOverord I think there was a bit of a similar problem with steel type in gen 3 as there was with fire in gen 4 though--not a lack of pokemon, but a lack of moves. there are very few steel type moves in general, and they've added more recently but according to bulbapedia, as of gen 3 there were exactly seven steel-type moves, one of which is only available to jirachi

i don't think this is a good reason for steven to not have many steel types (if he is indeed a steel specialist) but it is a thing worthy of note
-F

@DarkOverord one thing i can say though--in every appearance he has listed on bulbapedia, at least half his pokemon are steel type. however in most cases half his pokemon are also rock type (he shows up with the two fossils and an aggron very commonly, since that was his RS champion team)
-F