Well in some cases, deception can give someone a criminal conviction, if it is severe enough. The tort of deceit, declares someone can be prosecuted, if such deceit causes someone to act in a way which damages themselves. That is an example of when this rule can apply in some cases.
In my style of writing, I generally use the term deception to describe such villains with a history of deceiving others, often with highly damaging consequences. Whilst often deceiving to others will most of the time not result in someone getting a criminal conviction, to be purely generic I argue it is an general offense against someone to knowlingly deceive them into something which is false and could even harm them in some way.
This is really not a very important issue, thank you.
While you have a point there, I still feel like it's the best not to add "Deception" to the Crime sections for now, as it's only a crime in very specific cases. Generally, lying to or deceiving someone will not automatically earn you time in jail.
We have a rule you cannot remove or add the Pure Evil category without making a proposal in discussions. Broly from the Dragon Ball franchise for example was proposed and ultimately upvoted so do not remove or add to anyone unless you make a proposal and it has been accepted by the majority. To do this further will end up in a block for breaking the rules.