Those kind of domains don't really have any value because of their extension and also they are not CEO friendly like .com , .co , .NET , .ORG etc. ..
I never trust any website with an unusual extension, I only trust websites with the well known .com , .co , .NET, etc extensions. If a domain is too long I view it as suspicious too. Most people probably don't trust unusual domains so you can buy them cheaper, but get less page views if you use them.
Why? That's just absurd and ignorant.
There is absolutely nothing technical about the new gTLDs that make them less secure than the older TLDs.
It's like the advice to only do business with people who give a firm handshake - when most con artists give very firm hand shakes.