He's actually a better all-around player than Korver & has been the most consistent SG in the league (he leads all SGs in every shooting metric & only trails Curry amongst all perimeter players). Since Blake got injured he has been the 2nd best player on a team that has won 10 straight so he should be getting some All-Star buzz even if he doesn't have a chance to make it.
In the East, Middleton doesn't get any love but dude has been on FIYAH after a slow start to the season.
JJ/Middleton are the two most underrated SGs, tbh.