Sinn Féin will be ruined if they form a coalition

I read that Sinn Féin will go into government with Fianna Fáil if both win enough Dáil seats after the next election.

If they do, they will lose in the long-term for short-term gains. Other parties have gone into coalition with Fianna Fail and have been destroyed: the Progressive Democrats, the Greens. Labour went into coalition with Fine Gael and will be destroyed after the next election.

If Sinn Féin are a party of the ‘left’ and want to implement their manifestos, and abolish water and property taxes, it won’t happen with Fianna Fáil. They want to maintain those unjust taxes and the austerity status quo, just like Fine Gael.