That was listed as a
sub-step of the disable autopilot step. It didn't have its own number. If you were already flying manually when the runaway started, you'd skip that. The clear intent of the instruction was to eliminate the autopilot as a source of the runaway. If you didn't have autopilot, you wouldn't attempt that step.
Now if you're looking at
this checklist instead, it
does have that step listed independently. But this checklist came out
after the MCAS debacle, because someone realized the original instructions did not account for an MCAS-type event.
Even though it's an improvement, I still take issue with the wording here. How long do you execute step 4 for before moving to step 5? The words "until the aircraft is back in trim" do not appear. There is no precondition for step 5 (so, why not do it as soon as possible anyway?), and once step 5 is executed, step 4 is partially invalidated (because electric trim is unavailable).
"Control the airplane pitch attitude manually with control column and main electric trim as needed" is
not equal to
"Adjust pitch trim with main electric trim until flight path is stable and control column forces are reduced".