I don't disagree that he's not a playmaker and the examples you cite fit that, but passing, vision, playmaking are just one aspect of hockey IQ though they tend to be used by many to determine a player's IQ (incorrectly so IMO). The problem with this is it tends to describe playmakers only and exclude goal scorers. But scoring goal takes hockey IQ too. Finding soft ice, reading defences, knowing when to shoot and when to hold, how to use defenders as screens, etc. It's different from finding an open man in your peripheral vision but it shouldn't be dismissed as not involving hockey IQ.
And to your point that many point producers in junior don't translate to the NHL - well sure, that's not being argued. But hockey IQ or lack thereof isn't the sole reason a player may or may not make the NHL. Work ethic, size, skating, skill, battle level are all factors that have limited the NHL careers of junior players who had great hockey IQ. Jake may or may not succeed at the NHL level, but if he does it will be as a goal scorer and he understands how to do that just fine, however you want to peg his IQ.