totally unacceptable
Well don't accept it then. Thcweam and thcweam and thcweam about it until you are thick! Go sit in the middle of a taxiway and have a paddy! Boycott Heathrow!
That'll show them!
I'm reasonably sure that Ethiopian Airways, & Boeing, are both very glad that Heathrow Fire Service decided to wait around ready to get stuck in again until it was certain that the fire was out and wouldn't be re-igniting any time soon. The only thing more expensive than forking out the cost of a new Dreamliner because your fire service didn't hang around to make sure the plane wasn't going to burst into flames again, is being sued for the value of the lost Boeing market cap because nobody can prove from a pile of ash that the batteries didn't catch fire...