Social Blade states the Gifted Hater channel only makes ~$1,000 a month. I can't imagine he's making much from Twitch either.
Edit: Well, he does have a substantial amount of patreon subscribers, and even if they're all only subbing to his $4.99 a month option, that does put him at $11,000 a month. That puts him in the 6-figure category, if true.