Terrorism is the use of violence to promote an ideology. Full stop. Nothing precludes a terrorist act from helping people. Even Pablo Escobar set up schools and other institutions in his neighborhood.
You were clearly trying to make a point beyond the prescriptive definition of the word, so this comment reads like backtracking to me.
Political violence which is in line with societal norms is not terrorism. The value judgement isn't implied, it's the main the feature of the word.
I think with your definition everything would be terrorism which usually isn't what one wants.
There are probably some Columbians who were on the receiving side of Escobar's gifting and called him a humanitarian for it.