1. That's the argument that will one day have destroyed the planet. You know why that argument works ? Because everyone uses it. If noone would support mining noone would mine. Why should we not be the first to step up and say "screw it" to waste of computing power and energy ?
2. and then dump ? imho miners are not really healthy for a crypto. They are just in it for the money not to actually use the currency they are mining. (some may actually mine to support the currency but that's probably the minority)
3. Anyone can place limit orders that are automatically filled on an exchanges. I don't think that's a big point. Why would I acceppt a much worse rate when I can just wait a bit ?
1. Yes... I understand where you're coming from... it might be wise for NEM to not fund a multipool officially as a development project... but how can NEM prevent someone from doing it anyway?
2. In this case... the crypto they end up with is not the one they mined. Dumps may come later down the line of course once value goes up... some of it might be sucked up by new Demand from the multipool... but it will be interesting to see. I have my eyes on Blackcoin waiting to see how it will pan out too. I guess if Demand from the multipools is out the picture... it all comes down to general development of the respective crypto... which takes us back to what you are saying!

3. Some people are lazy/missing the know-how.
Yeah...well. I didn't actually mean to stop anyone from doing it. Just wanted to express my concerns