Thanks for the replies. Concesus is 0% premine . Now my next question is how do you determine when a coin has had a fair launch? If he posts it on a crypto forum? Does it need a pre anouncement? Does he have to post it on btcointalk? or are a few other smaller forums are all thats needed?

What I'm getting at here, does this mean any decent dev should really invest into some mining gear? For example say a dev has put considerable time, money and effort into his coin and he wants to start offering bounties for community engagement. He now posts up his amazing coin and development plan, anounces it as many places as possible to make sure all know its fair. Goes to start mining and the difficulty is so high he can barely get coins for himself to pay for development or bounties compared with miners.

I'm not trying to justify a premine but I'm curious to know how most devs do this? Do they hide the worth of their coin earlier to stop miners mining easy coins at the start?