Have you considered that they're not very large differences and you're just blinded by the fact that you're attuned to them?
Have you considered that they're not very large differences and you're just blinded by the fact that you're attuned to them?
Well, let's compare. You could drive for days across America, and hear truly microscopic changes in accent and dialect from one side to the other.
Here in Scotland, I could drive for an hour and hear a totally different accent, two hours would get me to a totally different dialect, and with a six hour drive it's literally a completely different language.
... and you'd still be further south than anywhere in the UK :-D
On the other hand, I'm not very attuned to the differences within e.g. Norway, the UK or Spain, but based on the politics that is visible to me, there are quite stark differences in many European countries and I have no reason to believe they are less diverse than Sweden or the US.
You can debate which are more or less diverse, but you have to admit that they are on the same order of magnitude. The difference between European countries is an order of magnitude or more different that the differences within the US. I can't understand how anyone can argue otherwise.