Double negative. So this sentence means that you DO use unisex words, which directly contradicts your earlier statement in post #14 of this thread. Whoooops.
As for "dude", it's hardly a term your generation can claim. We used it when I was a kid (and I still use it). And I have grandkids older than you. It's been in use (with the usual definition-drift) since at least the late 19th Century. It originally meant a male who dressed up extra fancy. Today, it just means 'person'. The sentences "Hey dude, what's up?", "Hey Terry, what's up?", and "Hey man, what's up?" are functionally identical, and none tells anything about the age or gender of the person speaking, nor the person addressed.