American Idol contestants are judged based primarily on talent. This is to their credit.
Some of this crap coming out of hip hop is absolutely stupid.
Judging talent is a nebulous thing. The show judges that singers can become enormous stars. That’s it. Does the singer have what it takes to put hits out on the radio? You can classify this as “talent” but it’s really just marketability. And yes there is overlap between the concepts, but there is also divergence. Talent and Marketability are not synonyms.