If I am pleasant to gain mobility or status, because, as you said, it provides opportunity, that’s being a kiss ass.
I am in no way suggesting walking around just being negative, instead, being negative, not unpleasant, but being negative, when appropriate is honest, and humble.
> being negative, when appropriate is honest, and humble.
It neither honest nor humble necessarily. It's a mindset, a perception, and a choice. You filter reality through your mindset. You choose to respond negatively or in some other way.