You want to know why XMR is unpopular to mine?  Because the only miner at present for AMD GPUs is closed source and the developer is arguably shady (he either wants 5% of your income or will penalize you 10% of your performance if you don't agree with the fee).

A coin with a 5% premine is usually dead in the water.   Normally it's the coin developers, but this time, it's the miner developer who has his greedy hand in the cookie jar.

While I do agree the developer is free to charge whatever he wants, it's against the spirit of open source that crypto was founded on.