This dude was a big believer in Neucoin and that is the point.
He invested 40 BTC during presale and was very supportive in the beginning. He followed closely everything that was happening and concluded that he has been "ripped off". You can read his post history on their forum to see why there was such a drastic change in opinion. Maybe you will agree with his points, maybe you won't. At least you'll know the rationale behind someone who has been on both sides of the fence.

I believe he created this email so that other disillusioned investors could contact him and discuss how to proceed next. I don't see any trolling or wackiness from his part, but rather a genuine concern for his hard earned money.

I don't think any of us is implying this is a simple scam, there are however serious red flags that any potential investor should seriously look into. On a micro level, it is someone's money that is at stake. At a micro level, it is another possible blemish for the cryptocurrency ecosystem
Once again, think about what people are saying and decide for yourself if it makes sense or not.

Welcome Long Neucoin

Rather than focusing on the motives behind each person [regardless of pro or con], you'd benefit more focusing on the points that each one has made

Read both sides of the argument with an open mind. See who is presenting facts and who is just running their mouths, google around and read the publicly available information. Think which points are more sensible.

Things are messy now with all the newly created spam accounts, it is quite clear from which side  

The actual details of the project have been discussed here, just buried here and there within these 56 pages. Concerns of coins being centralized on the hands of a few investors and team are under discussion as of now. We will only really know if distribution will be wide and fair after launch.
as for micropayments, all cryptocurrencies can handle micropayments well. It is like saying that a boat can float. I don't see the advantage here? Claims of certain 'innovations' have also been discussed and debunked here

no one knows if it will sink or swim but you can keep an eye out for a few indicators:
-What has been the general reception of the crypto community? Not just the Bitcoin one, but also of other major coins such as Doge, Peercoin, Dash and so on.
-Have the set targets been met so far??
-Has the coin secured any significant partnerships?
-Over a year in development and 25 days left to launch, what has been the achievements so far?
-Has the team been transparent and open to criticism in their forum? Or was there censorship?
-Beta is open. Has any impartial tester expressed awe or found any true innovations?
-Does the coin exhibit typical signs of a Pump n Dump??

TIP: you can find all answers in this thread, just be prepared to read  

As a final thought, here is what one of the biggest investors said a few days ago
http://postimg.org/image/7bi07xijx/18
FYI it has been deleted from the nokoin forum and he has been banned

I'll be honest.  It is fun.

Although I am not hoping anyone loses money.

...I'm just expecting it.