There is no bug and 3D touch itself is not removed. The issue you guys are experiencing is the fact that haptic touch is now forced onto you. The light touch triggering link previews is due to haptic touch being triggered (and you have no way to turn it off).
They did deprecate a few old APIs (peek and pop) cause they want to streamline 3D touch and haptic touch, which means 3D touch gets nerfed to be effectively on par with haptic touch.
I wish people would stop saying „it‘s broken“ because it‘s not. It‘s an intentional change, a gigantic middle finger to everyone with a (and who loves to use) 3D touch device. Now you know how headphone jack lovers felt when they removed the headphone jack.
They did deprecate a few old APIs (peek and pop) cause they want to streamline 3D touch and haptic touch, which means 3D touch gets nerfed to be effectively on par with haptic touch.
I wish people would stop saying „it‘s broken“ because it‘s not. It‘s an intentional change, a gigantic middle finger to everyone with a (and who loves to use) 3D touch device. Now you know how headphone jack lovers felt when they removed the headphone jack.