Compared to singing or playing an instrument it is easy.
If you know how to read, talk, write and count, that's essence of rapping. That means theoretically, if you finish high school, you got everything you need to know in order to rap.
The mic prescence and charisma is up to personal aesthetics and preference. We got rappers like 21 Savage that have a subdued prescence to Danny Brown who sounds like a man to Nas who sounds like he is just talking to you.
To be able to compose a song, you need to know music theory. That's not up to personal aesthetics.
In order play the guitar or piano, you need to know finger placement, scales, pitches and music theory. That's not up to personal aesthetics.
You don't have to learn a whole musical language to rap. You don't even have to be able to communicate with other musicians to rap. You just gotta be able to read and write.
Nobody asking a rapper to transpose a song from G major to A minor or to play a rootless chord. The rapper gotta know the most basic thing in the world to a human being, which is to stay on beat.
We got 18 year olds who never cared about music or rapping in their life, getting record deals off one song or a mixtape.
The barrier to entry to professionally rapping is extremely extremely low. The main instrument is the voice and rappers been talking for like a decade before they even start writing bars, sometimes two. So you got two decades of voice training just by talking since rapping for the most part, is talking on a beat. Not like these rappers are making opera songs and having to do complex melodies and vocal theatrics.
Compared to other musical artists, rapping is easy, really really easy. Most rappers even just punch shyt in. It's not like they doing one takes, where breath control is important.
Lol a White bytch off of a Dr. Phil meme is making bangers right now.
Anybody can be a rap star if people writing shyt for them or just being catchy. How many people you know can just up and be a jazz pianist?
How many musical talents are being done by people with no training, no type of musical knowledge other than a rapper?
Think about it, Cardi B won a Grammy off of doing a cover of another rapper's song who writes his own shyt, that she didn't even write by herself. She filled in the blanks.