Yes, we cannot decide whether it is the right or wrong decision because we also have to look at the whole thing that happened. It could be that in the company there is an unwritten rule that employees are not allowed to do something that if it is done, the consequence is dismissal. Well, we all also only accept the results, so you are right we can only speculate. But all decisions have been taken and it has happened. This can be a lesson for those of us who work in a company to always be careful and avoid activities in the environment that feel quite foreign or something that is not allowed.
We can only obey the rules if we want to still work in that company. We can't risk our job by doing something that is prohibited by the company. Besides that written rules, we should care about the unwritten rules that may be not allowing us to do something. It is better we work carefully so nothing bad will happen to us and we don't get any problems. But if we do something by coincidence, maybe the company can forgive us but they will give a warning not to do the same thing in the future. So if we can be careful while we work, we can be a good employee and the company may reward us with something good.