On the other hand, no one forces that same developer to sell all his coins at one of the mentioned prices.
I have given them only, because those prices shall provide the explanation that 5.5% of the supply can become an awful lot of money. That is why I also wrote:


If an interested dev comes around, and continues to develop this coin over a long period of time, he knows that he can help to extend the price rise into a looooong upwards phase.
Slowly selling these 5.5% will give him much more. MUCH more. e.g. 1860 COV * 0.004 BTC/COV = 7.44 BTC

But I understand your doubts. Perhaps the payout structure should reflect that? Stepwise, whenever a roadmap step is implemented, he gets another batch? There are many ways to organize this.