I just had an experience with this very thing. I did my own research into the service manual about this prior to going to my appointment, as far as camera calibration and such. I set up my appointment through Geico for Safelite due to the convenience, and yeah on Geico's site they say camera calibration MAY be required for your vehicle, so that's what prompted the research. So I arrive for my 8 AM appointment, and they ask if I'm dropping it off. I said well yeah, I'm gonna wait. They said it would take all day, to which I replied "All day?!" with some confusion. They said they needed to hook up a laptop to the car and recalibrate the cameras and it takes all day. They said it's Tesla's policy and showed me line items on an invoice in some code. I informed them that it's not necessary, and that the car calibrates itself by driving it. I offered to pull it up on my laptop in the service manual. They then came out while I was doing that and said it's Geico's policy because the vehicle would be unsafe, and I said so showing you what it says in the manual is pointless and I need to contact Geico. They said yes. So I called Geico and informed them the same, they contacted Safelite, and Safelite said it was their policy because the vehicle would be unsafe.The issue with safelight, at least from other things I have read here about them and Tesla's, is at least for some people they were "forcing" a camera calibration charge for model 3s and it simply isnt needed as there isnt anything for them to do. The cameras re calibrate themselves when you drive.
Needless to say I'm still trying to find a glass shop before I decide to just go to Tesla and have Geico reimburse. One shop said they don't work on Tesla vehicles outside of California, and another doesn't work on Tesla any more because the windshield is "too proprietary" and "finicky."
I also explained to them that the vehicle is not unsafe, because the autopilot features aren't available until calibration is complete. They wouldn't stop saying "unsafe."
EDIT: To be clear, the reason I didn't let them do the work was because I drove an hour from home for a 2-3 hour appointment, and I didn't have transportation arranged for an all-day drop off.