Do Scots count as native English speakers? What about the Irish? English has a very large number of accents and dialects that all count as 'English', but typically speech recognition software only works one variety.
I think the person you are responding to might have been talking about those who speak the language Scots, not just Scottish people.
Many consider Scots to be an actual language separate from English. There's a good amount of debate about this among linguists, I think.
For anyone curious, I recommend reading these pages from the recent Scots translation of the first Harry Potter book to get a feel for how it differs from English.
