Yes, essentially that. He’d had problems in previous years, and this year he lost fumbles against Ole Miss and Boston College. Had a huge rushing game against Virginia (162 yards on 14 carries), but had the fumble against BC and only received 2 carries against Clemson because of it. It was after that game that he made the decision to enter the portal.
It’s actually tough to find fumble data on individual players… you have to dig through individual game stats and find the specific plays in the play-by-play log where the fumbles actually occurred.