To be fair (and to show I'm not trying to FUD for no reason), the pre-mine is relatively standard on its own.  375K coins = 75k blocks (5 coins in each block).  With a 2.5 min blocktime, this is a 130-day pre-mine.  Most shitty pre-mines are more than half a year or even several years, I think 4.3 months is becoming somewhat standard (edit: assuming some of it is used for bounties and airdrops, of course).

But the dev is turning his pre-mine into more money by setting up his own MN.  That's where he shows his true greed, because it allows him to multiply his pre-mine.  So it looks small, but now he is taking 50% of all rewards and now has a HUGE dev cut.  Very scammy in my opinion.

Dev, if you want this project to have any value, take down your MN ASAP and focus on finding a pool owner.