Most start-ups don't take place in an atmosphere of coin fever, where psychological threshold for investing is very low and everybody is allowed to buy. Also developers usually aren't anonymous. What's happening here seems like a perfect opportunity for scammers.
I'm not for regulating anything, nobody should decide for you. What I wrote was meant more as advice for investors and should probably begin with "I suggest you invest in projects that do the following"
I suppose that in near future, with introduction of additional features/layers in bitcoin or contracts in ethereum (or similar protocols), distribution proof of burn will be replaced by tools that allow to secure and utilize funds in a trustless manner.
Yes, it was another poster who suggested adding restrictions on pre-sales. It is good to look for best practices in an offering. Implementing a platform for creating and funding start-ups as you suggest is a pet project of mine. Some of it is outlined in the funding model I posted above.