The endless focus on hobbies involving ICE misses the forest for the trees and has pitted tons of large hobby communities against environmentalists for decades because many environmentalists would much rather pick a fight with car guys than with the inter-global corporations and the defense forces that
actually make up most of the worldwide emissions pool.
International shipping is single-handedly the greatest contributor by a small margin, tons of which just does not need to happen, full stop. We send products around the entire world because it costs pennies less to package pineapple in one country than another, and most of it goes in the fucking garbage anyway. And the products that do require shipping could be done in a much, much more efficient manner to save tons and tons of ship traffic per year. The other major contributor is industry, which could be trimmed significantly if we put serious work into ending the production of stupid, useless, shitty items that no one actually wants (knockoff electronics, basically anything drop-shipped, single use fucking lithium phone chargers).
And all that's not even going into shit like the FIELDS of e-bikes and e-scooters being stacked in China because there's just nowhere to go with that.
Military dick-wagging especially but not solely by the United States accounts for absolute shit-tons of CO2 going into the atmosphere, too, absolutely none of which needs to happen. Military vehicles, construction vehicles, LTL trucks, service vehicles like garbage trucks: this is where we can make big dents in climate change. Not by taking away Jerry's Corvette that does, at best, 10k miles if he has a good year where he gets in a lot of track time. As far as I'm concerned this is just the "check your carbon footprint" garbage with extra steps: blaming consumers for the state of the environment while completely letting off the dozens of multi-national corporations actually holding the power and making the decisions that are collapsing the biosphere.