"What has that got to do with the Confederate Battle flag"

The point was being made that which flags cause offense depends on who you are and where you are in the world. The world isn't attuned to the American mindset and the world isn't fully aware of American history and internal American affairs and most of the world will have no real interest in them anyway - hence it is absurd to expect everyone to react to symbols in the same way as the average American would. As others have said, in the UK the first thing most folk would think if they saw someone displaying the said flag is that the flag owner was a country music fan. Racism or right-wing politics would probably not cross their mind. That may be down to ignorance of American history etc, but never the less it is so.

In truth throughout most of the world there is probably more chance of offending someone if you flew the Stars and Stripes as that is the symbol America marches under. The same of course would be said for the Union Flag. Fly it outside Buckingham Palace or at the Proms and no-one would bat an eyelid. But take it to the Falls Road or fly it in various other parts of the world then you're maybe asking to be abused or worse.

So however dimly the said flag is viewed internally in the US the fact is that it hasn't got the more world-wide bad image that for instance the Swastika has developed.