Countries change policies all the time based on the whishes of industry lobby groups or voters, not just the US. People focusing exclusively on what Trump is doing are myopic or arguing in bad faith.

And the global approach to net zero is not global, nor is it binding, it's more of a gentlemen's agreement bet which is basically worthless. Ideologically it sounds good, the issues are always when the tires hit the road, and then some spanners get thrown in on top: wars, pandemics, revolutions, natural disasters, political feuds, etc.

So yeah, outside of bubbles of privileged mid-upper class people in safe rich countries, nobody gives a crap about what's gonna happen in 2050 when they can't pay next month's rent/mortgage or their car doesn't start and their bank balance is red.

Capitalism got us chasing next quarter returns at the expense of what's gonna happen in 2050, so we'll be kicking the can down the road until everything falls apart, first very slowly, and then very suddenly.