Here's a bright idea: find an activity that's harmful to others in certain circumstances, but only in certain circumstances; then call for a ban on that activity in all circumstances, both when it's harmful to others and when it isn't. Thus the Royal College of Physicians and smoking in cars. Protect children, they say, by banning smoking in cars whether they're carrying children or not. Hooray - the doctors of logic and freedom. They think 'it would be impractical to apply the ban only to cars carrying children'. That's a powerful argument. Here's an equally powerful counter-argument: no, it wouldn't. And here's another, and real, impracticality - one that the doctors of logic seem happy to overlook.
The question is this: if a bunch of doctors are stuck up a tree, should they be left there for their own safety? Search me. Funny old world.