Generally a terrible interview, but those were some tough questions, and the journalist just kept hammering them. Pretty disrespectful actually. I'm surprised John agreed to have it published.
As for the Scottish speaking a language no one can understand, I'm sure that was said jokingly. Obviously jokes (irony) don't come across well in writing. That said, Scottish is difficult to understand for foreigners who are not accustomed to the accent. I remember first time I was in Scotland. I took a taxi from Glasgow airport to Greenock. I had to ask the driver to repeat himself constantly LOL Good times.