I noticed in system status on both my test and production environment that the data source name doesn't reflect the true host name displyed.
you can see the columns for data source name, component name, host ip, status and etc. but for NFA it is only showing the console device name.
Release : 20.2
Component : IM Reporting / Admin / Configuration
The data source displayed is the data source name that we get the information from not the actual system being displayed. In your case it would the Netflow console name you would see in Manage Data Sources view (Administration -> data sources -> data sources). In the Manage Data Sources view you could edit the change the source display name to something like "Network Flow Analysis" with no system name to eliminate the confusion.