They are expecting a spike in infections as a result, and the rules around self-isolation on positive tests and wearing masks in most contexts remain. But Ireland has had one of the longest lockdowns in Europe, and one of the best vaccination rates. Both have paid off, but not without cost.
I am not claiming that your statement is wrong, just that the causal relationship is not at all clear to me. It is probably much easier to show for vax rates, but lockdowns -- I have not seen a convincing proof.