The word chosen 'outrageous' is one that is designed to make the opposition to the government's decision appear knee jerk and reactionary because it provides no reason for why they oppose it. 'Outrageous' simply indicates the strength of feeling about an issue but provides no hint as to why they feel that way. The BBC does of course explain the government's reasons, they want to grant the amnesty because
Most of their cases date back over three years, with some over seven years.Other outlets do allow Grieve to put forwards why he disagrees with the Home Office,
This exercise should be about reviewing applications properly and granting asylum in genuine cases. The Government should not be tempted to grant an effective amnesty just to get the backlog cleared, and achieve a good headline.This is a short and concise quote that neatly explains his viewpoint, whereas 'Outrageous' gives the impression of a pompous rent-a-quote venting over how angry he is with everything.