I followed this story closely when it happened several years ago. Muzzo has already been released from jail, btw.
Let's not forget that Muzzo had just come back from his bachelor party in Florida after getting shitfaced, kept drunk on the private jet ride back to Ontario, then drove his sports car somewhere after leaving the airport to have a few more drinks, and THEN blew past the stop sign on his way home. This wasn't like a rare hidden stop sign accident. He had so many opportunities to say "shit I'm pretty drunk, maybe I should call the family limo to take me home this time". Instead he said "fuck it, I do what I want cause daddy is rich and powerful".
His lawyers managed to get pre-sentence jail time counted as 1.5x days served. This is common already in the U.S. but Canada started shifting away from this habit many years ago, instead counting a day for a day. The case was delayed for some time, allowing him to serve that higher rate longer than normal, i.e. a benefit that most Canadians don't get.
His family then pleaded to keep the sentence small, reminding the judge and the community that their family construction business routinely donates a lot of money to local organizations. The resulting sentence, combined with his pre-time-served, and whatever other deals that must have been made behind closed doors, allowed him to be released after just a few years.
ALSO, the victim father who off'd himself was tazed by police just one day earlier due to an "altercation", despite the officers already having been informed of the guy's family history. Funny how that detail is missing from the daily mail's report. https://globalnews.ca/news/8941076/edward-lake-tasered-arrested-before-death-by-suicide/
TFA left a lot of that out -- you're right.
So, how much time does a normal guy serve for murdering a few people in a DD accident? In some US states, you can be charged with murder for that. The article didn't make a good case for why this would be a justice issue. Probably b/c Daily Mail
hard to find a 1:1 comparison, but several years ago an immigrant truck driver ran a stop sign and killed a bus full kids on their way to play hockey. He wasn't drinking, just missed the stop sign. 29 charges, no plea deal, 8 yr sentence and now he's being deported.
More recently, a guy high as a kite blew through a stop sign and killed a mother and her three daughters. He got a 17 yr sentence but he had repeat traffic violations and was driving on suspended license at the time:
https://globalnews.ca/news/8838170/ontario-driver-sentencing-crash-woman-three-daughters/
(post is archived)