It looks like Apple is slowly coming to the realization that most of the 3D Touch-specific features it has offered on the iPhone 6S and up can be ported quite easily to non-3D Touch iPhones with a simple long-press input instead.
iPhone Bluetooth Keyboard with WORKING trackpad review
Example: The 3D Touch feature that lets users 3D Touch the iOS keyboard to turn it into a trackpad and control the cursor position is now available on all iPhones that support iOS 12 — that's a whole 5 years worth of iPhones, by the way, including the iPhone 5S.
This is pretty good, as the 3D Touch feature was probably one of the most useful features in a smartphone keyboard and it made moving the cursor in a text field remarkably easy.
However, there is a difference here: