What it actually says is:
What on earth was the purpose of this? I know what it
actually says. I read it. I didn't say that it says anything other than what it does.
UK definitely has more than three. In England alone there is a huge difference between say, a Cockney, a Geordie and a Brummie. In Scotland, compare a Glaswegian with an Aberdonian, or a Teuchtar.
Then there the Welsh and Irish....
The US definately has more than three as well. Those are three major.
Would you confuse Tom Jones with Gerry Adams or Billy Conolly etc...
No, I wouldn't. But someone who wasn't familiar with British English would. And again, being able to personally recognize different dialects is NOT the same thing as different dialects existing.
And the sense of humour ??
Well, it doesn't pay to take these topics too seriously !
Hey, I'm not one to deny a sense of humour or the importance of it. I just don't believe in saying whatever you want
however you want and then putting it down to a sense of humour. It just doesn't wash with me.