In short, we aren’t on track to an apocalyptic extinction, and the new head is concerned that rhetoric that we are is making people apathetic and paralyzes them from making beneficial actions.
He makes it clear too that this doesn’t mean things are perfectly fine. The world is becoming and will be more dangerous with respect to climate. We’re going to still have serious problems to deal with. The problems just aren’t insurmountable and extinction level.
My guess is you’re quoting this? https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emissions
The problem with your statement is fragmentation. Yes, “transportation” is the biggest single CO2 polluter followed by electricity, but there are billions of individual cars and lorries out there, across many different nations and laws, so the marginal effect of any single car is infinitesimal, and too difficult to go after. But things like maritime shipping, aviation, and railroads are monolithic, and transnationally regulated, so much easier to make an impact. Commercial transport also accounts for a way, way larger chunk of the 28% than residential transport.
In terms of most bang for buck, we should be targeting electricity generation and industry, as these are not nearly as fragmented, and easier to directly regulate and enforce regulation. If you immediately outlawed the top 100 corporations on the planet, you’d make a way bigger impact on CO2 than say, every residential house in America giving up their personal automobiles. Commercial lorries pollute far more than residential autos.
There’s also another big reason why fixing energy generation is top priority: the way to fix maritime shipping, aviation and personal transportation is to move them to electric trains, which needs more electric power.
And heating, and cooking
My brother from a “red” state just relayed the latest conspiracy theory he heard: electrifying everything is just a way to trap us so “they” can raise rates and we have no options