It isn't about reasoning, it about preference. Running for example is a great aerobic activity but its not for everyone even though you could argue it burns more calories per unit time than cycling.

Just because someone chooses one aerobic activity over another doesn't make them wrong even if one has additional advantages the other does not.

On the other hand, cycling is a lower impact activity. So each has advantages (and disadvantages) the other does not. Its up to the individual to decide what works best for them and what they prefer.

Your argument is the equivalent to a 400 pound person touting all the potential hazards and negatives of running to someone that has the ability to run very effectively. Its obvious why this individual would be against running.