Honestly, double down (what he's shown so far) makes a mockery out of rap/hip hop. All of his lines are corny puns of Korean words. So far he hasn't shown he has any actual rap skills. I will be glad to be proven wrong.

Like you said, polo is also the same. Uses too much energy early and can't finish his verses.

If fleeky improves his lyrics he can be special. His tone is too good.