I was in insurance underwriting before and I can tell you the alarming numbers of exhorbitant and fake claims are the main culprit.
Blame the increase of premiums on those black sheep workshops that send their COE cars on the road and highways to deliberately cause a chain collission. That's a multi million dollar business for them.
Car owners who collaborate with workshops to cause further damage to their cars to inflate the claims, and make false medical claims should also be shot for their selfish acts.