Ahahahahaha, so true!
But things are changing, in big cities, buses are already equipped with door brakes (they can't move while doors are open) and GPS speed tracking. People are able to report bad driver behaviour online or by phone, and corrective actions are taken. The reality is that the great majority of people here in Brazil ride buses to go to work, and they can't afford another means of transportation. Buses are not generally used by the middle/upper classes, who usually ride taxis/uber when the need arises.
By the way, this inequality of social class in bus usage creates a problem: the local governments try to improve bus conditions and technology in order to increase security/comfort and incentive bus usage, but obviously this creates an increased fare in order to pay for the extra costs, which are taxing on the lower class population which are the majority of bus users, creating discontent. It's quite a chicken/egg problem.
Source: I work in the area.