It literally does not say this in fact it says the opposite.
Sigtrygg said it already, but here is the descriptions of Engineers from High Guard pg 89
ENGINEER
An engineer’s work is never done. Engineers are
responsible for the maintenance and repair of the
ship’s drives, power and life-support systems. When
all systems are operating at peak performance, the
engineer’s job is simple: Monitor the ship’s functions
and, in the case of starships, engage the jump drive
when called upon to do so. Ships have a complex array
of equipment with hundreds of working components.
Keeping them all operating is difficult and demanding.
Physical work that they are doing, maintaining and repair systems.
The 3rd paragraph in the Maintenance crew description on pg 91 of HG
Ship maintenance staff must be creative and know
how to use their skills to ‘jury rig’ a faulty system.
While engineers are busy with the complicated
tasks of keeping the ship’s high-tech drives running,
maintenance workers must replace lighting systems,
clean air ventilation shafts, get sticky iris valves to
open and close properly, and keep the cargo crane
rolling smoothly between the gantries in the hold.
Maintenance is a blue-collar job that pays less, often
calls for more overtime and lacks the glamour and
perceived value that engineers have but quality
maintenance staff are worth their weight in gold.
During space combat, maintenance staff must often
put themselves in harm’s way to get a critical system
back online after it sustains battle damage. Hazard duty
requires some level of expertise with vacc suits.
The Maintenance position is part of the Support Positions that are replaced by the Full Operations Package. They are doing the physical work of ship's maintenance.
So no, it doesn't say the opposite of that. It says EXACTLY that. Otherwise, it wouldn't take any hull tonnage and would just require the Virtual Crew software.