If it were any other coin with
#1. Large botnets being primary miners, paying known mining coders to write custom code for them to mine
#2. Private custom GPU mining software asking for donations or face inefficiency
the coin would be subject of massive hatorade and calls for abandonment. XMR is getting away because of the network effect. It doesn't make it right and will debated down the road. But it is what it is. These are getting reflected in valuation at the moment. Any pump would mean more heavy selling from existing holders too, because they know they can get back in cheaper.
While I think that wolf0's decision to knowingly write code for botnets is despicable, let me point out the only difference between XMR and a hundred other coins:
With XMR, you know that it's happening.
(Of course, we know it happens with Bitcoin as well -
http://cseweb.ucsd.edu/~snoeren/papers/botcoin-ndss14.pdf - but the reality is it happens with any CPU-profitable coin.)
The custom GPU miners are not that different from Bitcoin -- after all, to play in the bitcoin mining game, you have to purchase an ASIC. The difference there is that the mining tax is closer to 100% -- or 150%, because most ASICs won't even ROI -- instead of 5%.
You're making the same mistake that others have in thinking that the process of mining is more important than it is.
Mining mostly matters to miners. As a user, but not miner, of Bitcoin, I could not care less whether or not people have to buy custom silicon to mine it, or whether they make or lose money in the process. Some attributes of the mining process matter for the value of coin, such as whether it's easy to 51% attack it, but that's really just saying that the security of the coin is important to users and holders. But beyond that, the distribution of mining, or profits associated therewith, etc., are completely unimportant.
Miners are cogs in the coin machine that respond to the incentives created by the developers and the market. Don't ascribe to them mythical powers -- look instead at the underlying money flow.