Community college is a great stepping stone for many.
But the stigma comes from the average CC student functioning below the already-sorry level of students at four-year colleges. Therefore the classes tend to be “dumbed down” and grading is easier.
It makes sense for certain employers and graduate programs to take that into account.
Having gone to both a CC and then a university, having kids who went to both, and knowing many other people who went to both, I've found the idea that CC is easier a myth.