Apple may or may not be ready to euthanize 3D Touch. My view is that it sticks around, neglected and unloved, forever more. Like Dashboard on macOS. (Yes, Dashboard still exists.)
That would be a shame, as 3D Touch really is an excellent augmentation to a touchscreen device. It’s also quite tweakable. Here’s how to adjust how it works, and — if you really hate it — how to turn 3-D Touch off altogether.