I'd hold my breath before saying he's back. He's "come back" several times before and fucked off without announcement just as suddenly. Give it a month or two to see if this time it'll stick.
While them vanishing often can be frustrating, I'd give a bit more grace to someone who has been putting quality work out to the world for free, for years, and despite all the rough shit going on in their life.
Glad he's back. Given how dedicated he is to his work is and him publicly releasing so much content, I really doubt he's been bullshitting us on the very serious personal problems he's gone through over the last few years.