You need official certificates to be allowed to work with high voltage. But the program that controls that machine there, well, it can be written by some Germanistics student who can't find a job in his original field (no offense intended. I know several brilliant programmers who never studied. I just want to illustrate the difference).
If you understand this attitude, you will also understand why the general state of cybersecurity in such companies is such a problem.
They outsourced every possible role in software engineering and IT to India to the bare minimum where all that was left were the devs who worked on the firmware for gov related projects and regulatory concerns meant only US citizens could work on it. For the devs that were left, it was an uphill battle for resources and salaries while it felt like Sales and marketing were put on a pedestal when this company’s entire product was our work.
whatever...
I think you'll find that the people who write control software are mostly Electrical Engineers.