Such an imbalance is unhealthy and needs to be addressed as a matter of urgency. Our culture of politics has evolved to suit a certain class of men. Confrontational politics is the reason why many woman are not involved.
The locker-room atmosphere caused by the un-natural over-representation of men is not half as much fun as it appears. A healthy gender balance calms things down. Men bring passion. Women bring reason.
A simple solution is to elect two TDs from each constituency, one who is a woman and one who is not, using PR STV and two lists.
This will also reduce time-wasting and exhausting clientelism.
A minor constitutional amendment would be needed and, in any event, such a sea change should go to referendum; but what an opportunity for us all.