The way I see it, it's not an IPO not a premine, because both mean that devs get money all together and 'before' the others, and they can dump them.
Here it's a quite innovative and fair way to support the dev and community, without this coin will die. There's only 0.05 DMD for this for each block, so it's a VERY limited supply, like the coin itself is rare and very diluted over very long term.
This means no dumping, it's the right way others will follow to sustain development and in a fair way.