While I share the "struggle", I do not 100% share The opinions expressed in this article.

You can always be honest and professional by stating the obvious, that is:

- An idea by itself is worth pretty much nothing.

- I do not share your opinion and I do develop projects for a living so we can agree on a price and I can develop a prototype for you.

These two statements are more than enough to end the conversation very quickly and professionally if your interlocutor is not 100% inclined to actually develop his/her project.

And I really don't like phrases like "Learning to code (and most tech stuff) isn't hard". Learning to code beyond triviality is hard and that's why there are so many tutorials on the internet, and it takes a lot of time and dedication.

And seriously, why do you devalue your (and other people's) work so much?

Grow a pair and learn to say to people:

- "I might be 100% happy and willing to develop your idea, but writing code is my job we can agree on a price. Otherwise, go talk someone else"

Or:

- I am sorry, but I don't share your idea and I am not interested in developing it. You might want to try talking someone else.

Do not elaborate much if not asked to. People don't like advices they didn't ask for.