Remarks by Tony Pua may be constitutionally framed. But reducing the monarchy to its narrowest legal role risks misunderstanding the very Constitution he invokes.
Former dictatorial Prime Minister Mahathir Mohamad (based on own words) has run foul of numerous laws, the law will take its course on alleged wrongdoing!
Agong remaining above the fray allows Malaysia taking the cue from Commonwealth jurisdiction for stable government not based on numbers game in Parliament!
Former Prime Minister Najib Tun Razak's family can file habeas corpus application and/or lodge Petition with Conference of Rulers following Appeal with Agong on miscarriage of justice and thereby help Malaysia avoid real harm!