Because he's having a great yr despite playing with a minutes restriction & he's single handedly turned us around..Demarcus got voted in the West they've only won one more game than us
Difference is the Kings are like a game out of the playoffs and also, Cousins is a vet. He's been in the NBA 7 years now and this is his 3rd year in a row making the all-star team.
Embiid is a rookie. Off the top of the my head the only rookie I can think of in the last 20 years that got picked by coaches to make the all-star team was Blake Griffin
I think he deserved it, but again based on how the coaches historically vote, the odds were against him