The Microsoft Graph collects huge amounts of signals about Office 365 user activity. Some of that data is used to generate insights into information that might be interesting to users. You can already disable insights in Delve, and now Microsoft allows you to disable insights elsewhere in Office 365. The downside is you’ve got to patch the Graph organization settings to limit insights, and that might just be outside the ability of the average tenant administrator. Unless they use the Graph Explorer to do the job.