Female streamers don’t have that fake obnoxious rage yell/scream the guys do.

Eh, guys with the fake rage scream are about as common as the ladies who see Twitch as essentially a starter camsite/way to advertise their OF and are trading on boobs more than anything else. There absolutely are streamers on Twitch that are exactly what OP suggests, but they’re far from a majority and probably not the one used in the picture.