I think what he his hinting towards is the fact that Al always attracts a double. If you pull a man off of 4 well shooting players, someone is going to be open for three every given time.
If the Jazz Had Howard averaging ~35% and Hayward averaging ~42% from three this year, we would've locked up a much higher seeding spot. Note how our team began surging late in the season, once Devin started hitting his threes. Al would bring in the double, Devin would drop the three, the paint would open up.
So yes, I agree with Cyrone in terms that Al could be decently functional in "his perfect team". Unfortunately for him and us, this Jazz team isn't anywhere close to that. This might be a stretch but offensively, a team like Golden State could be functional with Al at the 5, and Lee playing Hi/Lo with Jefferdad (among several long-range shooters like Curry, Rush, Thomspon, et al.). It would also be the biggest defensive joke in the NBA. So although I am not as negative on him as some, I still want him to be traded. It just doesn't seem like a good fit.
All of that is true, if Al were a consistently good passer out of a double. Did he improve? Meh, I guess .. but the double only helps if he who is getting doubled both recognizes it and finds the open guy. I don't see it.