They said that they have big investors backing this project and ready to buy all tokens and that's why there is only 20% of total supply for public sale. So I think there are a big investors behind the sense who brought a big percentage for some privileges and good discount.
I'm not sure but 20% for public sale is a normal amount for an ICO while there is a big percentage in the private sales, it served for a bigger investors which hold the coins or tokens for so many years.
As far as I know they have huge potential to reach their hard, telegram members more than 30k plus? Seems many are investors are there too.