I'll respond assuming this post is serious.
It's 2018, not 1996. The world changes.
Would you be talking about how "rap beef isn't cordial, kids!" if Pusha T took shots at Drake being half Jewish? Come on. Let's not act like mocking people with physical disabilities for your amusement is offensive in every context but a fucking beef track makes it A-OK to go in on disabled people for their disabilities.
You haven't checked battle rap in the last 10 years have you?