> Not even the whole of the UK - really only England and Wales

"Only" England & Wales ... which is ~90% of the UK population. It's a fair generalisation in a casual context like this.

We get it, cricket isn't wildly popular in Northern Ireland (nor Scotland). Why chastise the parent for suggesting it is?

But come on - don't shoehorn an indirect political point into a casual conversation.

And as if cricket was unique in having jargon? Hurling doesn't have jargon? Gaelic football? Football? Of course they do.