Yes - put his 5 years up against any 5 yr period for the Coyotes, and you would be surprised at the players found.
Keller, Chychrun, Entwistle, Soderstrom, Maccelli, Hayton, Bahl, and Joseph all have seen NHL time and are likely to for the future. This does not include Garland, Jenik, Farinacci, or Crotty in the mix (Garland being the one selection Chayka was given when Maloney was still here) and the others are still likely to have prolonged AHL careers at the very least.
While not elite, our drafting has been significantly better with Chayka at helm. I count 33 picks made and on the verge of 12 being NHL regulars, to some degree. Right now, close to 9 or 10 with promise.