Problem is, while you can do as much homicide as you want, you cant easily undo the systems we have in place.
So many cars run on gasoline. Are you gonna ban them all effective immediately. Yea see how Covid lockdowns worked, people would just riot, if you tried this.
Not to mention, the entire powergrid of many countries, including the USA, runs mostly on fossil fuels.
All the planes that runs on fossil fuels? Are we also banning plane travel?
Cargo ships that run on fossil fuels? Can we even attempt to ban those?
And so much more.
My point is, not trying to be pessimistic, but it seems a bit late.
We can stop more damage, but the damage has been done.
The trolly problem happened like sometime before 1950. The person near the lever already made the decision, we are living in its aftermath.
The point is that we don't need to ban airplanes, just the people who are using private jets to fly every other day (that's below average for a billionaire).
Billionaires also disproportionately invest in fossil fuels and their carbon footprint is the size of a small country. Once you include the mega yachts, their many compounds and all the other excesses encouraged by malignant wealth. It might not fully solve the problem, but the rest would be made easier without them owning the politicians, courts, and media.