What about 'social skills'?

Seriously, if I hear the 'social skills' question one more time, I’m going to lose it! Why is that always the first thing non-homeschoolers bring up? When did this become the go-to concern? Who started this trend, and why is it the #1 question everyone asks?

For context: I went to public school and was terrified of talking to adults until I was a teenager. Meanwhile, my home school kids will strike up a conversation with anyone, anytime!