One point rubbed me the wrong way: "And you stand an excellent chance of shipping a success -- people greatly overestimate how difficult this is."
Do you? Analysis of projects on Indie Hackers [1] casts a bit of doubt. Not saying it's not possible, but "excellent chance" might be a stretch.
[1] https://www.indiehackers.com/post/holy-heck-this-is-hard-8eb...