Bullshit. You are a victim of propaganda.
In reality, a car lane can carry 2000 people per hour with an average car load. With mild car-pooling, it's easy to increase it to 6000 people per hour.
A bus in the US has an average load of just 18 people. So with 10 buses per hour, you get just 180 people per lane per hour. Even at peak loads (200 people per bus) and a bus every 2 minutes, you get 6000 people per lane per hour.
Transit sucks and will always suck. It's pure math. Transit slowly consumes lives and increases misery. All it's good for is to move people to "misery centrals" (downtowns) where pretty much nobody really wants/can live in comfort.