Valkyrae publicly apologized for using African-American vernacular English,

She discovered AAVE after a mod pointed it out to her.

Streamer Valkyrae, one of the most popular in the world,

AAVE, or African American Vernacular English, was used by her in a recent apology

Streaming without realizing it. Her chat channel moderator brought it to her attention.

Having a unique vocabulary and grammar rules, AAVE is intrinsically linked to African-American communities.

The term "straight bussin'" and "no cap", for example, is commonly spoken by online communities.

Using AAVE in promotional material, including streams, is controversial for non-African-Americans

Since Valkyrae isn't African-American, her mods didn't agree with her old-person speak, such as "I'm serious, for real.".