Rucka rucka ali is funny to listen to.
I'm biased but if you don't like him, loosen up. He's satirical, and you have to recognize that he attacks only stereotypes. In fact he has made fun of white Americans before- remember Party In The TSA or Let's Go Cops? He appears to just like to hit vulnerable spots.
I don't want to say he's similar to Eminem in any way, but remember Eminem caused plenty of controversy way back then. The only thing keeping Rucka from stardom is just a disclaimer (Em had so many of them, especially on the Eminem Show- he mentioned rappers are purely entertainers, true gangsters had respect and carried firearms for protection and not aggression and that at the end of the day his goal was to make music people can vibe with).
His songwriting is clever; his flows and impressions are plainly goofy and he's only ever made fun of stereotypes and famous people. For example his songs about Asians are about as bad as Korean Comic (funny for no reason, he makes similar but more specifically Asian music), his songs about black people are usually targeting Obama and the rest are him being random (Minecraft Won't Add Inches To Your C--k).
I also clearly have a broken sense of humor (my friends are well versed in how to make a dirty pun because of me) but I don't find Rucka to be very offensive. I am gay and I'm largely Latinx, so of course I have many jokes targeting me. Still, I don't think he's seriously sly everythingist, solidified by him making a public announcement he was deleting and destroying old racist content. Grow tough skin, it's likely he just likes offensive jokes. If you look from an unbiased perspective, n---- means something endearing to black culture- though, everyone can remember to get a pass from their friend. In my opinion fa---- could be seen similarly.
I would defend his content myself. This message is targeted to those who dont like him or need a thinking exercise.