Why did his conviction get thrown out?
It was a non-unanimous jury decision.
The Supreme Court decision was posted - but they don’t state it directly.
You would have to know what the ‘Ramos’ decision was.
Louisiana finally rejoined the normal world on this issue. If the State want to send you to jail, they have to get a unanimous jury decision.
After Reconstruction, Louisiana went with a reduced verdict (originally 9-3 then later 10-2). There was a bad Supreme Court decision about 50 years prior 4-4-1 The 1 setting the crazy policy to continue.
In Ramos, Gorsuch wrote the decision overturning this long standing bad policy. I believe Kavanaugh and Thomas both wrote decisions concurring.
Louisiana had changed their Constitution just the year before, but made the change only affect future cases. The courts are reviewing the prior cases and overturning where appropriate.
Victor remains in jail and awaits a retrial.