I believe these are the types of toilets build by charitable organizations. One of the key reasons to do this is because a culture of doing your business in nature and increased population densities are carries of sickness.
The toilets are cheap to build and deploy and save lives
Its possible that this one is installed here specifically because it was already a commonly used toilet spot.
Many people in that part of the world retain the ability, largely lost in the “west”, to squat with their feet flat on the floor. That reduces the strain on the knees/leg muscles while “straining “ 🙂