I don't want to be negative at all, but they are right. The NXT client is far from being stable. Please, don't get me wrong, I like the features and the way NXT is going, but we need something better. I'm a dev who has been interested by implementing NXT into another system, and I was even looking at contributing to the core project, but other than an investor, I'm out right now.
I'm checking the releases, always updating to the latest client, but it simply takes a few days and the client will start misbehaving. I reported a _very_ simple way of exhausting memory just after the release of the code and the posts were ignored at first. All done by devs relying on things like GC. So, without getting negative, there is _no_ major exchange that will take NXT seriously right now. You might be comparing this to scrap coins or shitcoins, but get real, these were copied from a very well written and tested code base. Don't blame these guys, they are serious and the fact that they want a better client before deploying is real.
The current code used a very wrong model. It was originally made closed source and once unveiled, only "part" of the code has been put online. The fact is, this has been written in java, has been compiled without any guard against reverse engineering and hasn't been properly tested and/or reviewed before showing up. So, it's easy to check for bugs and security issues by reversing it, but very hard to somehow contribute on the project because the code we are reading is coming from a disasembler.
