Once a year there are local lake cleanup projects which remove a lot of debris like line, water bottles, etc. That's hard work, involving auto tires, treated lumber, even household appliances like refrigerators dumped to avoid a county $75 pickup service. I prefer to walk the lake edges during really low water, winding line onto readily available styrofoam, looking for great lures on the other end. I really believe the great majority of line will be found very shallow where most anglers fish, where the likelihood of hangups exists. I have a huge collection, at least 50 pounds of stored unsorted lures that need cleaning and put back in service. At least meanwhile the lake is a lot cleaner. When I get enough line wound up I cut it and try to burn it on the spot. The stuff burns clean if not too muddy. While out there I make gps waypoints of great looking spots a fish ought to hang out in when the pool level comes back up, an extra incentive for walking the lake bottom. Those walks help solve mysteries I see on sonar, too.
My career had much to do with wildlife management, line entanglement being a very rare problem in my opinion. Like said above those 6 pack beer/soda rings are far more devastating. I've seen untold numbers of ducks wearing them. Consider popping cans out into the ice and properly discarding the rings before launching.