I recently encountered the “stakeholders don’t need to know those details”-cow. It came back to haunt us and introduced some checkpoints that made the team uneasy and could’ve been avoided.
I am not a scrum master, but a PO, so I guess this ends up being a different kind of cow from the SM perspective. Either way, I feel like the PO should educate business partners on how a team works within an agile setting and how decisions are made. The SM can support the PO, they should always work closely together.