This just ends up with you declaring: It's someone else problem to make me.
That's not pragmatic. Unless you personally invest time and effort into political change to address these issues, it's just lazy and irresponsible.
Just own that. I have adjusted some behaviours and still fall short in many other areas. Never said it was easy. But here is actually an example where it is easy. Take the train and little cost in time and money, while gaining comfort and productive time. And you're saying you can't even be expected to do that? That's just cynical and irrational.
When it comes to what transport mode is best for the environment I basically am a toddler. I don't actually know what's best. I need to be told what's best by one having a prohibitively high price.
I don't even need to claim that it won't work, I can just point to evidence and you can see: it does not work. People are taking the plane because they can afford to.
Today, a lot of people don't take responsibility for their actions because nobody external is telling them to. This is being a toddler. You wait for some parent figure to tell you that you have to do something when you dont want to.
Today, most of the western world are toddlers and its being programmed into us through movies and games as well. Because this is a state of mind that is super easy to control. You end up in consumer mode, wanting things that make your life easier. :)
I might have no responsibility for it, but it affects me. If I choose to cycle to work I'll be a second class citizen on the road while people in cars pass me with little regard to my life. Why would I choose this? Why would anyone choose this? The answer is there is no reason to choose it, so people don't.
It will never work from the bottom up even if everyone agrees what the right thing is.