4.5% Premine it is not normal.

Yep. Dude create u own coin with 0 premine, give airdrops, bounty and listing U COIN in exchanges for 0.1, 0.5, 4.5, 15 BTC!
if you want to see a coin in the near future and on good exchangers it is necessary to pay for it. Have you thought about this?
Do not like it - go out the door .. or in window.
That premine is ok if there is transparency in where it is going.
I also don't mind a portion of the block reward going to developers, like what happens with zencash, to encourage ongoing development and steady development.