Pubs are noisy, and busy, and distracting, and I don't like them, and they aren't great for kids at night...
But it doesn't matter - the person was there, their friends were there, they had a story they wanted to tell and they told it in a way they enjoyed.
End of. Great if someone videoed it so others who don't like pubs could see it too, but mainly that doesn't happen. Just accept that some people like different things than you, and if it bothers you - take their content and blog about it, critique it and share it. But don't tell the story teller to change - especially if you want them to head somewhere where their friends are not... The point of a good story is to entertain an audience, wherever they may be.