"allegedly costing hundreds of thousands of dollars in losses." It seems he was already messing with the systems while he was still working there. This is not a case of malicious compliance or they fired the only guy who knew how something worked. He was actively sabotaging the company's network.
"he apparently became disgruntled by a corporate "realignment" in 2018 that "reduced his responsibilities,"" So it's not even like the company was being evil as they fired him while he was on PTO to take care of his daughter with leukaemia (or something). He would've been better off finding a new job if he was unhappy. Instead he made things far worse.
But 10 years is way too high. Especially for a victimless crime with alleged "values" of loss. But otherwise he gets no sympathy from me.
That's all technically correct. That's how it works in a lot countries, Europe included. But that's not how it feels, or what people think is going on. They're paying into a system that is going to benefit them. Even if what they receive is derived from future taxes on other people. They contributed to the system, therefore they are also entitled to benefit from it.