Doesn't matter if there's only four people willing to ride on a given schedule.

"Centralize transit on major corridors" is about full buses. But transit agencies spend as much per hour on an empty bus as a full one. Transit agencies run empty buses on routes that are rarely full, and run vans and even microtransit that may just be a waste of money.

The OP you're responding suggested using Waymo's to help fill the buses, not get rid of buses.