That completely ignores the fact that a human being needs at least half an hour to one hour of light exvercise / physical movement daily to stay healthy at all. If you do not cycle or run, you'd need to go to a gym / fitness studio.
Also, if you care at all about CO2 emissions, eating vegan or vegetarian food is the way.
Also, driving 3 or 4 kilometers to a supermarket to get a veggie pizza needs way more energy and CO2 for the drive, thsn for the food itself. You can compute that from the fuel consumption of a car - about 180 Grams of CO2 per person per kilometer, so 1.4 kilograms for 4 kilometers each way.
Also, often the danger of cycling is stressed. That's rubbish because of the health effect of physical exercise - the most dangerous aspect of modern life is lack of exercise, and if you use a bike instead a car you are wayyy less likely to die of cardiovascular problems, which are the real killer, not accidents.
A very uncomfortable reading but in this time, a necessary topic.
The new development since this text was written is the Trump administration dismantling security institutions and intimidating security companies.
And, the rampant illegal data collection of US companies feels increasingly hostile. Why would a smartphone or smartphone app need my fingerprints or microphone?