It will not create an oil spill any larger than what they already create, and that localized damage can be much easier to repair or mitigate than the widespread pollution of entire river systems, oceans, atmosphere, etc.

Theres a reason why in Ghost in the Shell, the solution to climate crisis and pollution was nanobots doing everything everywhere. Because thats the wonder technology it would take to do what a bomb and some empty barrels that can scoop up contaminants can prevent.