I'm talking about something like Clathrate Gun Hypothesis [1], not increased hurricane activity or Miami slowly sinking. A runaway heating event or worse.
Humans mostly don't want to invest in things that don't have immediate payoff, where "immediate" <= one human lifespan. (Typically we want things even faster than this.)
I doubt lecturing a generation of kids will change policies. Those kids will still consume economic products that cause carbon emissions. Nobody -- and I mean nobody -- is willing to do a shutdown to the level that would be required to stop warming.
This article that proposes more dense cities. Nobody is going to do that for the climate. Think about how many stakeholders in reaching an 80% population vaccination rate didn't show up. These people are wasting their breath.
The human species cannot solve this problem unless we manage to kill off all the plants and stop having oxygen.