If an eagerly loaded screen takes a long time to load the user can close the screen tab. If that happens the data loading is not canceled. This suggests to the user that it is ok to try again. Repeated opening of the screen could kill the server.
While this should be fixed, the real problem is in the modelling in this case. An eagerly loaded screen should load very little data. If the load takes a long time lazy loading should be switched on in the model.