They're not for sale until the pre-sale period ends. It's a way to have some organization in all this and allow time for people to know the product.
After that, I'll issue the first tokens on the market, sending airdrops, etc.
So your presale is for people to send you 1 Steem per token on advance
The pre-sale is to gather funds, but the pre-sale period has its advantages for those who buy in it, like a 20% discount and a special airdrop that multiplies per 20 the quantity they bought in said period.
airdrop to loads of others who hasn't bought any this making the price drop to nothing
Whatever they'll do with their loads of tokens it's their own business. If the price lower by their sells, there will be time to raise it up buying the dip.
I think this is more simple than you wanna make it.