I think if you choose to do something that puts people at a higher risk than necessary, you should be responsible for the consequences.
If you drink drive and kill someone, you can't say it was an accident. If you're doing burnouts in a crowded street and kill someone, you can't say you didn't mean it. Same with speeding. Driving a death machine puts us all at a heightened risk, and when things go wrong, there should be consequences.
The people who died in Daylesford definitely had consequences of this drivers choice. Why shouldn't the driver have consequences?