Yes, to keep it relatively simple, the only form of legalized betting on horse racing currently in Canada is through the parimutuel system. There's a bit of confusion—rightfully so—because the term “parimutuel” is very expansive, and it could encompass a lot of different forms of betting. At the end of the day, it's pool based, and that is what you would do if you're going to the racetrack today to bet. You're betting under the CPMA regime, and it is single-event sports betting—or one form of it.
On February 25th, 2021. See this statement in context.