Your response will remain anonymous to the form owner after you sign in to save the response.

Alan_Burris figured out somewhat of a runaround:

found an old form from before the change, share as template, made a new form and erased all previous questions/content and added new. No “your response will remain anonymous…” at end. 

tedious, but better than waiting for the eventual change. 

thanks for everyone’s comments and shared aggravation with nonsensical addition.