That message should only appear when the project does not exist on the server and the user is sending the entire project history to the server. Subsequent S/R’s should show a summary of what changed instead.
If you are seeing that message after the project already exists on the S/R server, then that sounds like a bug. Note that when doing a S/R for the first time for a newly migrated project, you are, indeed, sending the entire project to the S/R server since the PT7 and PT8 S/R servers are separate.
Whether it’s “helpful” for users is another matter. I would argue, at the very least, it’s much more helpful than what used to happen - which is you’d get a “here’s what changed” message for the entire project history. 
