Here's a beautiful article from Der Postillon: https://www.der-postillon.com/2025/06/bezos-privatjets.html
One of its points is that one paper yoghurt saves about 10 grams of CO2, while one jet trip generates about 30 tons.
However, in Germany alone, the market for yoghurt is about 1 million tons per year. Let's assume that 1/2 of that is consumed in individual cups of 100g, which comes out to 5 billion cups, or a CO2eq of about 50000 tons.
That is, if all of these were paper/plastic cups.
Collective action WORKS!