Constructive Criticism

Why is it so hard for an artist to receive constructive criticism from a DJ with out being branded as a "hater" when the song is not liked? Rappers and singers in this generation are super hardcore in their music and on their social media but extra sensitive when I give detailed reasons why I don't like their new single or album. I can see if I said "it's wack" and said nothing else. I'm not a hater. I'm just not going to congratulate and celebrate your music if it is not any good in my humble opinion.