Politics, like legal, is by nature adversarial and for good reasons, chiefly to serve as checks and balances. That's not to say political parties shld do battles day in day out. Working together for the common good for Singapore is a given, putting aside ideological differences, say if there's war and the common enemy is out there. But there must be diversity of ideas otherwise we will stagnate and die.
Quarrelling over tones is really silly. Asking people to sue is silly. Not taking up the challenge to sue is smart.