The biggest benefit of bootstrapping is that it keeps your focus on your customers and building a product with value, rather than "your next round". I'm also not sure where you get the "3-6 months" timeframe for bootstrapping, or what that means, since you don't need to wait for anything to get started.
It was more like the prep time, either get some savings or fork out some time. Time lines are not that deep to be honest. But if there are ways to improve it, please let me know. I would be glad to incorporate the suggestions/insights.
You seem to be considering the funding process from a particular founder perspective. There are lots of different types of founders. Some have the finances to support themselves and don't need prep time.