We have seen drones fall out of the sky because of beginners not checking the props for cracks or scratches.
If you do a job and your inspire falls out of the air then you wont get paid. Its a better option to replace props at $20 just to be sure.
If you crash and damage the QD mount...
If you are doing a job always use brand new props every time you do a shoot, have a second inspire ready if the first fails, and dont fly on props if they are scuffed/scratched. A simple scuff can turn into a fracture/break while in the sky. Locks are cheap and effective but whats the point...
Looks like you should have waterproofed your inspire before flying near water :)
Dream Vision Sound currently provide waterproofing solutions for DJI phantoms and inspires.