What you say isn't wrong, but when you're asking what the most impactful changes to the current system would be, the absolute climate impact of flying vs. other sources of greenhouse gases needs to be considered.
Which is to say, the world-wide policy priorities need to be on transportation (other than flying), electricity production and industrial emissions [0]. Giving up coal and petrol cars has potentially much greater impact than giving up flying.
That said, when you consider the CO2 emissions that you cause yourself directly, a good rule of thumb is that as soon as you fly at all, CO2 from flying dwarfs all your other CO2 emissions. On the individual level, not flying, flying less, or offsetting carbon emissions from flying has the biggest impact.
I think reducing CO2 emissions from a personal level is the wrong way to go about it. It needs to be addressed from a more higher level, because the majority of CO2 emissions cannot be attributed to a single person.
Take for example shipping, which uses 4.5% of global co2 emissions, yet most people haven't stepped on a ship in their lifetime, and never will!
Shipping also very often uses the dirtiest of fuels and is therefore much more polluting than airliners which burn quite high quality refined fuels. That's why, to get around recent laws limiting sulfur emissions, large container boats now first "scrub" their exhaust gasses with sea water, so all sulfur will now nicely pollute and acidify our oceans. [0] No emissions though, because emissions bad.
I agree with you wholeheartedly that this is not a problem that should be solved individually. I don't hold my breath for what the higher ups are coming up with though, their measures seem misguided at best, deliberately loop-holed at worst.
Like every time this comes up, there are 7.5 billion humans on the planet and thus no need to only do X or only do Y. We can and must reduce every aspect of our global pollution problem, right now, or it will kill the majority of humanity. We aren't resource-constrained. This isn't a 5-person startup where you have 5 workers and that's it. You can put a million people (if needed) to work on fixing air travel at the same time as you put a million people (if needed) to work on any other aspect of climate change.
All arguments that we shouldn't fix X climate problem because it's less important than Y are just arguments that we shouldn't fix climate problems because the arguer doesn't want them fixed.
No individual actions have any effect at all, and people who argue about them are, again, just distracting from the important work of creating collective solutions.
Yes, it's more efficient to concentrate on making one thing better. If you have a limited amount of people. But leaving the flying industry to play freely, the amount of saved environment will just move to the airplanes instead of taking the car. There is nothing that says we all can't do our part in lowering environment cost wherever we work.
Which is to say, the world-wide policy priorities need to be on transportation (other than flying), electricity production and industrial emissions [0]. Giving up coal and petrol cars has potentially much greater impact than giving up flying.
That said, when you consider the CO2 emissions that you cause yourself directly, a good rule of thumb is that as soon as you fly at all, CO2 from flying dwarfs all your other CO2 emissions. On the individual level, not flying, flying less, or offsetting carbon emissions from flying has the biggest impact.
[0] https://www.epa.gov/ghgemissions/sources-greenhouse-gas-emis...