I would refer the Deputy to the Government's Framework for Restrictive Measures https://www.gov.ie/en/publication/ad569-level-3/#measures-in-place-from-1-december, which outlines the overriding public health rationale for the suite of measures applicable to each of the Framework's five levels.
Under level 3 of the Framework, only individual training is permitted indoors subject to compliance with prevailing public health requirements. Sport Ireland has published practical guidance on the measures around indoor sporting activity on its website at: https://www.sportireland.ie/covid19/individual-and-indoor-training
It is a matter for the Government to decide on the range of restrictions considered necessary to respond to prevailing pandemic circumstances, including those to be applied as and when the current grave epidemiological situation improves to the point that a return to Level 3 can be contemplated.