For the first situation, 3 h a day is a lot of time. I don’t think we should expect people to make such big sacrifices every day, at least if they work full time. People need leisure to stay healthy too. If it was 1h or 1:30h it would be reasonable to take the bike imo, but at 3h I’d cut them some slack. There are simply much more effective climate measures that we as a society should implement. They shouldn’t buy a new gas car if they can avoid it though.

You want it so much, in fact, that not stopping there to buy a hamburger creates twice as much negative utility for you as biking instead of driving

But it also causes a lot more animal cruelty than the miniscule climate impact of one commute.

You can do a direct analogy with environmentalism. By driving a car, you’ll do some harm to people and the environment. But if you’d knowingly chose to buy products that were produced in literal slavery conditions, and directly funded slavery that way, this would be a whole different ethical issue.

In reality, even if a person is addicted to burgers like a drug addict, they could easily buy plant-based burger patties that taste really similar to regular ones and make their own burgers. Vegan cheese isnt quite the same yet, but a little difference in taste certainly doesn’t justify torturing animals on factory farms.

In most countries, McDonalds even has plant based burgers available afaik.