I'm back in my home country and caught up with my younger cousins.
One of them is 14 and man, this kid's got charisma.
He was cracking joke after joke in very witty ways. He wasn't just being a clown. He had the women blushing and younger girls at the party (it was his brother's birthday party) looking very interested in their shy, awkward teenage ways.
That same cousin confessed to me that he started smoking and banged his first chick. I discouraged him on the former but congratulated him on the latter.
A natural in formation. Beautiful thing to behold.
His social intelligence is far beyond most people I've ever met and certainly above any 14 year old I have ever met.
His life experience is also quasi nil. Dude's never been out of our small island, I don't think he's even been south of that same island lol.
Just a kid with excellent social skills.
So, to answer your question, no, life experience is not needed for excellent social skills.
A socially attractive individual is one who makes others around him feel good. He respects others and makes himself respected.
The gist of it is to make others feel good.
Whenever you interact with someone, there's an energy exchange. People are sensitive to it.
If it's negative, they will steer clear of you.
If it's neutral, they are, well, neutral around you. Still better than being negative IMO.
If it's positive, you become someone people like having around and seek.
I'm being blessed with a pretty cool life right now at 25, with lots of travelling, new experiences, a hot girlfriend. I write fiction novels in my spare time and hike waterfalls.
Life experience and hobbies are in pretty good shape.
Yet, I almost never communicate these when socializing.
They're not needed and if anything, they can be burdensome.
It boils down to the energy exchange between me and the others.
I keep it upbeat and positive. I don't let it veer off in negative territories.
Read Dale Carnegie's classic "How to Win Friends and Influence People". I read it when I was 14 and socially clueless with little to no life experience. It worked wonders.