The advantage of migrating the whole organization is that it's no longer your problem if a .doc file looks slightly different for someone outside your organizat

The advantage of migrating the whole organization is that it's no longer your problem if a .doc file looks slightly different for someone outside your organization. As long as it works internally. As soon as you cross different organization IT systems, documents don't look the same anyways: e.g. local office vs Microsoft 365 online.