Why isn't the touchscreen pressure reading being put into use by Android? Just now I discovered the "Pointer Location" dev app on Android, which tells how much pressure is being applied on the point on the touchscreen. They even have it since Android 1.0.

I know there may not be dedicated pressure sensors and it is just an estimate depending on point size.

I am saying that why didn't or couldn't Android implement "Force Touch" in Android phones? They have the pressure readings ready. They even have the method which when called gives the pressure.

P.S. I am running LineageOS unofficial build for my OnePlus One.
Don't run to conclusions early - some Huawei/Meizu/ZTE flagships has it, sometimes referred to as "3D Press" or other names.

Ultimately the feature is worthless - it requires 3rd-party apps to integrate well, but since Android doesn't have a native implementation of it (yet), there's no way apps could adapt to all the proprietary standards raised by different manufacturers. The app support situation and the sales of the above phones proves the point.

This situation is quite similar to what fingerprint scanners have experienced on Android before Marshmallow, except that it's of even fewer actual use than it.