Especially since it is not true: I'm a very fast coder too and some product I sold or that is working well today started like one/two days of hacking where an alpha was already working.
The point is that this is just the start. Even if you don't add new features after the first two days you need weeks or months more to make this product rock solid, with a good UI, seriously scalable, documented, easy to use for the newcomer, and so on.
To get started fast is an invaluable thing, it helps building a lot of things in your life so you simply trow away what appears useless, not working as expected and so on. But to do great things a lot of work is needed anyway.
The point is that this is just the start. Even if you don't add new features after the first two days you need weeks or months more to make this product rock solid, with a good UI, seriously scalable, documented, easy to use for the newcomer, and so on.
To get started fast is an invaluable thing, it helps building a lot of things in your life so you simply trow away what appears useless, not working as expected and so on. But to do great things a lot of work is needed anyway.