* "Lack of conviction" reads like a moral judgement on the rational business decision to leave a startup that isn't working.
* "Fear" is an emotional word that (to me) implies irrationality; "concern" or "wariness" might be more appropriate, especially because you don't give much context. What are they "afraid" of? A company with no revenue and a 3 month runway?
* In a three-person startup, the "half developer half CEO" probably shouldn't be picking out the ex Goldman developer as good-but-not-excellent for not turning out a feed reader fast enough; why didn't you get it done then? And especially...
* ... when the CEO of that pre-revenue pre-product decides to have the company pay to fly him to SXSW during that dev crisis.
I mean, look, you can do everything right and fail, and everything wrong and still win; startups are a huge risk, keep trying, etc etc --- but you wrote this to get feedback from people, and mine is:
* I wouldn't want you as a cofounder (hey --- my cofounders probably don't want me --- I work my ass off to mitigate that!)
* You seem more engaged with the "lifestyle" of a startup --- lawyers, "networking", advisors, incorporation, "voting" --- than with the reality, which is a mindbending daily grind of work and fear and effort hopefully aimed at getting to cash flow neutral as soon as possible, but most likely aimed right off a cliff.
You're obviously going to do this again; all knocks aside, you read like this stuff is in your blood. Better luck next time.
[edit: toned down very slightly].