Low and Chiam are decorative pieces in the so-called parliament to give "passing grade" to the greedy, corrupt PAP and in return they get paid close to $20,000 each per month and life-long pension.
PAP ministers are errand boys of the Lee regime, chosen for their total obedience to the Istana tyrant.
Chiam in my opinion is egoistic but Low employs a different political strategy.