My friends can't ride horses as well as they used to, they've been using cars to get around too much.
Sure horses are more efficient, but cars are faster and more convenient, and allow you to get a lot more done.
Also cars will get better in our lifetime, horses are horses.
"My friends can't reason as well as they used to, they've been using LLMs to do their reasoning for them." is going to be the eventual outcome. What's the point in getting more done if it ruins your mind in the process?
Your analogy doesn't make very much sense.
Perhaps it would be better to compare somebody who drives a car vs someone who used to drive but now uses Uber.
Writing code seems more like walking to me; at least it is the most manual way of getting a computer program. Horses might be more like one of those low-code/no-code solutions (it really fits, they are useful but very opinionated, so not always cooperative). And, the situation with AI seems a bit worrying for them.
To continue the modified analogy, if your friends lost the ability to walk, you’d be quite worried, right?
Just try to take those same friends who drive everywhere on a (walking) trail hike inside the city, then come back to report.