Points 1 through 3 are off. Point 4 is bang on though. You don't need 250k to 300k, and if you had it you'd wish you had 500k or 750k anyway. A longer runway puts off the scary point where you have to launch something. You can bootstrap a startup with very little capital if you have the skills to do the work yourself, or you have co-founders with those skills, or most importantly you're happy for things to take longe…
Time === money.
If you're doing it, or someone else is doing it. You're paying.