A hobby is something you do for yourself. Whether it's code, or painting, or woodworking.... you don't care if someone is better or faster than you. Unless you really see the hobby as a potential business, in which case you might want to reevaluate because with LLMs it's possible for an individual to do more by himself than ever before.
You can do a hobby for any reason. It doesnt have to be for yourself. He could enjoy programming but also enjoy contributing to the wider open source community. So it makes sense to feel bad when he sees another project popup and invalidate his work. If it was another person who'd worked hard and thought about the project he could at least take solace in chatting about their solutions but with AI its nothing. It just solves the problem and there is little to be gained from it.
Many hobbies are collective endeavors or a way of providing something useful to other people.
Ah, well I do nothing for myself sir. I work most days of the week and time off is limited. My company doesn't really do vacations. I haven't had one in at least 3 years and hopefully I'll have the PTO soon but never the money!
That's silly. Why can't a hobby be something you want to show others and receive acknowledgement and validation from?
Well, some hobbies are fun because you're doing something no one else has done before, or which is challenging to accomplish without a lot of investment in time and growing in personal skill. A lot of hobbies are fun because of the competition and because you get to be at the forefront of something. It's fun because we're all limited in our time and energy and choosing to spend time on something means you can do things that someone else who doesn't spend time on it can't. That feels good.
People who were in the demoscene took joy in learning how to make a computer do things no one had done before and push the hardware to its limits. That's not as meaningful if someone can achieve the same thing by prompting an LLM.
A lot of hobbies are fun because of the human challenge in creating the output and knowing it was only achievable because someone had to take time to create it. Having an LLM accomplish the same thing absolutely devalues the fun in the hobby. Hobbies aren't 100% just about accomplishing something for yourself, even though if you sway to much into doing it for validation or to compete with others it can lead to burnout and lack of enjoyment.