Surely they would!
But .. what would Coldplay be doing at an Iron Maiden concert, and standing in front of Maiden fans in the first place?
Why would the Maiden fans be watching them?
All very f*cked up... ;)
Shock horror, we all like different kinds of music and, to a lesser or greater degree, some cannot deal with that concept!
For whatever reason.
And their piss doth boil !
There is plenty of music to go 'round, take your pick and bollocks to anybody else.