Driving to your local grocery and flying private are orders (plural) of magnitude different in terms of carbon footprint. If your local grocery is 10km away, you'll save ~2.5kg of C02 if you cycle instead of drive[1]. If you fly for three hours, you'll save ~700kg of C02 if you choose to fly commercial instead of private[2]. I don't see how the _former_ is "way more extreme".

[1] https://ecf.com/news-and-events/news/how-much-co2-does-cycli... [2] https://www.independent.co.uk/travel/news-and-advice/private...