I incubate at 88.5 - 89 and cut at day 52
I cut because I can
Yes cutting has it's risks if not done properly. Yes you can lose an hatchling if not done properly so you better know what you are doing and proceed with caution when doing it.
It is really a matter of personal choice and like everything else has to do with making an informed decision.
In the event something goes wrong and I lose an hatching I am one of those people that does not want to think "what if I had cut the egg 2 or 3 days ago, could I have saved this hatchling's life?", so instead I cut at day 52 (VERY carefully)