Demerit points is a Ministry of Transportation penalty system to help promote safer driving and to penalize those who are too reckless. They mean nothing to insurance companies. Insurance companies don't look at your points and they don't care about your points. Points stay on your record 2 years from the date of the offense, not the day you were convicted. Points are overrated. They are only a problem for novice drivers and people who shouldn't be on the road in the first place. Majority of drivers will never collect enough points for it to be meaningful, while those that do certainly deserve what's coming to them.
Insurance companies only want to see your convictions. From there, they place your convictions in a bracket (eg. minor, major, and see you later). Insurance companies base their pricing on risk. People who are charged with driving offenses are more likely to require some sort of payout during the time their insured. If someone has multiple charges for speeding between 1-15km, they are a bigger risk than a person with none, even though they carry zero demerit points. It's quite possible to be dropped by your insurance company for multiple convictions carrying zero points.