The way I ended up fixing the report without republishing the survey was by adding a second date field in the survey that was the full date and time, no "date only" specifications, and hiding the date only field.
The reason for the move to DateOnly was to make scripting easier since I wouldn't have to worry about time formating. So I needed to keep the date only for the scripts that were already written, but needed a fix for the report. I also couldn't "hard code" time since the field techs are submitting surveys from multiple time zones. So now I just have the two date fields, the date only for scripting purposes, and the regular date field for report purposes. Since doing that, I haven't had any issues.
However, this only works for those for when the operator/field tech is submitting the survey on the day of the needed date since the hidden field is autopopulated.

For the record I did bring this up at the last Esri conference I wasn't given much of an answer... I hope this helps.