I have no desire to be involved in a great debate here but to be fair - as I understand it - the only equipment that is removed when the aircraft are delivered to Dublin is the HF which is totally superfluous to the vast majority of the Ryanair operation. Hardly a safety issue.
Also I believe that the OFDM equipment (which could be considered to increase safety) is installed after the new aircraft arrive in Dublin prior to their being put on line.