Sorry but i find this rather pathetic. If anyone is prepared to go to such lengths to see something that isn't there, then thats their choice (religion is, after all, notorious for this). Doesn't mean the development team should pamper to it (and therefore justify/encourage the behavior)
ultimately, people, for whatever reason, are always going to be upset. It's the way it goes. Devs need to decide who has legitimate criticisms and act accordingly. This is an example whereby it isn't legit. By pussyfooting around such silly things, they're only going to waste their time and damage the project, and it's reputation (as sane individuals will be scared off - who would participate if devs havn't got their priorities straight?)
it's like you said, when we think logically.
Haters will not think so. They will seek the weak points of NEM and this 666 may be that.
NEM should tempt masses of people. The masses won't act with sense, they act with fear and hope and greed. There' lies the numbers and their magic. ... for example try market NEM 4.0 to China

The question is not about dev's sense, not at all, this has nothing to do with sense, not even the sense's control.
The complex logos may cause risks. Maybe that is the reason why MasterCard and Visa have so simple and dull logos.