Touch-typing in standard finger position is ABSOLUTELY NOT REQUIRED to be a successful computer technician unless you are doing office document processing. As long as you can type in a reasonable speed so it doesn't become a significant bottleneck of your human-machine interface, it is okay. It's good to have this skill to become a more efficient computer operator, but it is optional in many cases.
I can type at 50 WPM minimum by just pecking two fingers on the keyboard, and even faster when I use more fingers. I barely need to look down at the keyboard, I only do it to readjust my hand position, but most of the time, I can do this by using the text I just mistyped on the screen as my negative feedback. Many people I know who are not touch-typers, have also naturally acquired a similar "just works" way of typing - you don't need to actually study it, if you use computers day-by-day, you have probably obtained it.
In the same way, when the cool kids in the 2000s were using SMS to text all the days, they learned to type at an unbelievable speed on the 3x3 numpad phone keyboard.
On the other hand, if one is struggling to type words and commands on the keyboard to operate the commandline, it doesn't mean one is merely an inefficient typer, but often indicates a larger problem: A LACK OF GENERAL EXPERIENCE ON USING COMPUTERS, and this is the real problem, as general-purpose computers are becoming less and less common and many people of the young generation do not share your experience, which was how the older generation learned to type.