I am curious about that myself, he was appointed Head of Growth for Dash Core Group in Feb 2022 (so relatively recent).
Frankly i did not even know he left. I don't visit Dash Discord anymore, so i could be a bit out of touch with Dash latest developments.
Seems he wasn't a good fit for Dash, he was holed up in his Telegram group, refused to join the forum, or twitter, pretty odd for someone whose role it was to reach a lot of people and build hype for the project. Anyway, it's good we didn't have to wait a year to find out it wasn't working, funds are more scarce these days, may as well save them for better things.