Hmmm I found this: https://www.scruminc.com/cells-teams-2020-scrum-guide/
"Self-organization is a concept from Complex Systems Theory where an intelligent system self-organizes to achieve a goal. So we now use the term self-managing to try to avoid teams weaponizing self-organization as a tool to avoid any commitments. The team self-manages to deliver on the commitments to meet the goals."

It seems that the intention was to remove the unnecessary reference to the complex systems reference theory. But it really means the same :)