My 2 cents.
Even if dev is buying own coin its better than total premine soldout. Now premine is tracable to accounts which consist of 390k MAMMs (375k supply block). Anyway those MAMMs went through strange places (mixer too) and probably there are something about 500-750k MAMMs within dev hands. I can be wrong and drill through blockmaze on your own.
IMO better is coin where dev holding coin which is showing some kind of selfconfidency in own coin.

Always we have worser option. Look at current scam-coin wave with strange blocks for devs, premine dumps, 10% instead of 1% premine, rented farms to push diff and take all money supply.

One major dev sin: pissed on marketing side and pr. It will be hard to rebuild trust even if tech is fine and devastation was made by pointless fud.