>>21432522He's still active on SNS looks like:
https://xcancel.com/s_papa777
He published a recipe book in Japan compiling his recreated recipes of local Japanese restaurants often seen on his channel last year and says he's planning to publish a second one in the fall. He also studied and took some kind of cert exam earlier this year so I'm guessing he just took a break from YT being busy:
https://www.amazon.co.jp/dp/B0D9CFRKGV