Respectfully, I have to disagree with you.
I took my 6+ in a little over a month ago for a screen replacement. Since it was a non-warranty replacement I did not bother to hide my jailbreak. I figured Apple would just replace the screen.
The genius I dealt with demanded that I restore. She stated that they would do no work on my phone unless I restored it. And this was before she even knew about my jailbreak.
Apple's passive-aggressive way of moving you forward.