TBH every team/company I've seen that uses strict agile/scrum is surpassed by the non-agile teams eventually. There are exceptions to this for teams that have modified agile/scrum to the point they can sensibly do long-term project planning and account for short-term hickups.
Scrum works if the manager is unclear on what the team does and when. Sometimes software teams are low productivity because people straight up aren't working, sometimes it's because there are a hundred operational tasks eating up all the bandwidth, and sometimes the team members aren't prioritizing the right work. In such a world scrum gives day to day status of the work everyone is doing and they can provide feedback to the team to get the team moving faster.
It's a short-term fix that sometimes gets pushed as a panacea for all software team management problems.
Scrum works if the manager is unclear on what the team does and when. Sometimes software teams are low productivity because people straight up aren't working, sometimes it's because there are a hundred operational tasks eating up all the bandwidth, and sometimes the team members aren't prioritizing the right work. In such a world scrum gives day to day status of the work everyone is doing and they can provide feedback to the team to get the team moving faster.
It's a short-term fix that sometimes gets pushed as a panacea for all software team management problems.