I think people are not seeing another big issue with an unlocked premine of this size, and it's simple market manipulation.
Dero reached a rather sizable ATH back in January before the market took a dump. A premine of this size would allow for massive sell opportunities, only to buy in again at the bottom. The same can be said as of now, with Dero at 30% of the price it was a month or two ago.
These "untouched" premine totals can be completely fabricated, since the dev can play with this stack on the market, force a massive dump, then buy back enough dero with a 70% discount to keep the same amount of premine, except with rather substantial gains made along the way.