Sure, nobody should be 'screwed over', but at the same time maximum benefit should be obtained in any time recovery situation.
Every stop with a commuter train means a 2 minute delay. Skipping a few stops can make a very late train into a tolerably late one. It can also prevent knock-on effects to subsequent trains. A delayed train will tend to have a queue of trains behind it, but nothing in front of it for a substantial distance.
If a train from Drogheda with 300 people on board is twenty minutes late at Gormanstown due to a signal issue and skipping 5 stops will make it 10 minutes late, then 3,000 person minutes can be regained. Perhaps 300 passengers for intermediate stations are inconvenienced by a further 3 minutes (the time between the front train and the next train). That is a loss of 900 person minutes. Net gain 2,100 person minutes (35 working hours).
It's not ideal, but it's making the best if a bad situation.
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