If you want to disable the feed you could look to remove the related solutions from the workspace. You might also look at Azure Monitor policies or diagnostic settings related to Service Map or network related diagnostics. I am not certain if there is a way to filter or reduce the volume once VMInsights is enabled.
https://learn.microsoft.com/en-us/azure/azure-monitor/reference/tables/vmconnection
https://learn.microsoft.com/en-us/azure/azure-monitor/vm/vminsights-enable-overview