Citation needed. Did you actually experience this, or is this a hypothetical?
I do not know why pilots would be giving you a hard time with a truck given that most general aviation aircraft in operation are older than your truck.
What I have seen is people driving brand new trucks calling all GA aircraft a 'rich person's toy' even when they cost much less than their shiny trucks.
> banning all civilian air travel
If we calculate fuel economy per mile, planes do pretty good for long trips. Planes are (obviously) very aerodynamic and light. Getting up to altitude takes a lot of fuel but, once there, they sip fuel. Mind you that there are general aviation planes running with standard gasoline that are most likely more efficient than a 23 year old trucks and, most likely, even more efficient than new trucks, once you consider the speed they travel at and how light and aerodynamic they are compared to a truck.
And, since you said All civilian air travel, that includes airliners. Now we are talking efficiency per set per mile. The numbers are actually pretty good; you can look them up.
All that said, can we, collectively, stop antagonizing people that live a different lifestyle than we do, for no reason?