Aer Lingus are well aware of the issues with EIR. CM was in Cork recently and accounted for some of the delays being due to the loss of one EIR aircraft at SNN, this left them with no operational spare for the EIR network. This is changing as all of the RE fleet will shortly sport EIR livery.
My advice would be to write to EI and if/when EI refuse to pay appropriate compensation (€250 for each cancelled service) refer to the UK CAA / Irish IAA. Unless individuals chase EI for compensation due, things will not change. With the utmost respect, posting on a forum is much less useful than sending EI a letter, you are much more likely to see a response by contacting the airline directly.