I thoroughly enjoyed my time flying with a Nav, got me out of a spot more than once.
This anti-Nav, Eng, Air Trafficker, Scribley, Stacker, etc stuff by fellow pilots is sadly more a reflection of the shallowness of their own character. Has always left me a bit cold.
Problem is, most pilots who fly with a navigator do not have ability to fly single seat so take it out on the poor old guy who is simply doing his job.
Numerous ex-Nav mates who are doing very well indeed in management, marketing, project management, IT etc. A few (generally those who have done the aerosystems course) still fly on airline salaries at places like Warton. But there is far more to life, and a person, than the ability to pole and I suspect employers beyond aviation know it.