My favorite part is how he admits the rules he's enforcing are inadequate, and yet continues to enforce them.
Sounds like furthering a cause. By the specificness of that cause, I would have to bet:- Had an article he wrote on a small programming language, possibly his own, deleted for not being notable enough.
- Feels that less notable languages than the one in question were not treated similarly.
- Perceives injustice.
- Takes action.
Hopefully nothing other than some quality encyclopedia writing and anti-deletionist attitude (space is very cheap) comes from this. I don't like how ugly this is already becoming.