A long time since I flew a B737 Centaurus, but the text is exactly the same in the B777 FCTM.
The pertinent phrase is “as required”. With a 60 kt headwind component, the speed trend arrow will be Big because the airplane would have a GS at Touchdown of maybe 80 Kts.
I taught my students to always go to the second detent and apply reverse thrust. With the aircraft under control and decelerating, then eyeball the desired exit point and estimate the deceleration. Then reduce the reverse thrust as desired so as to be able to stow the reversers after 60 knots and at idle reverse.
The only inertia computers are biological, and the pilots are the only ones able to do this successfully, repetitively. Airbus has Brake To Vacate (BTV) on their A380 and only two reversers. The BTV computer often applies Max Braking unnecessarily. AI is still modifying the software.
It is the old stroy of judgement, which comes with experience.