So that shows the lackness of SF in our team, not that Hayward plays best at SF. Burks is already a SG, he cant play SF, when he is on court, we can play Hayward as SF depending on his matchup, but i insist, he would perform much better as a SG than SF. Why not play someone in a position he has obvious physical advantage? And it is not like Millsap playing SF instead of PF, he has many disadvantages there but Hayward doesn't have any disadvantage or any ability he lacks that a SG should have.
Or it shows that the 2/3 are largely interchangeable.