- How big is the actual organization? I mean, are people disengaged because the organization is so big that a project of subteam X is not visible to subteam Y, or because everyone's morale is so down that nobody cares? I would argue that it's in the best interests of the company and employees to know what's happening outside their little projects unless people don't have any Epic Meaning motivation and come only to 9-5 work to code specs?

- Do people from different subteams ever help each other? Do they share the codebase, delivery process, users? I mean, is the same manager — the only reason why they are all considered being one team?

- Based on what I read, it does look like there is no overlapping or impact of subteams on each other, and they seem to be self-sufficient and independent. If that's the case, then I would consider switching away from Scrum (I assumed Scrum from standups and retros) in favour of Kanban, and replacing daily stand-ups with weekly updates.