A problem with any simple implementation, like editing the dictionary of your spell checker, is that you may want to taboo one meaning of a word but not another. For example, I try not to talk about privilege - the thing the oppressors are supposed to have and the oppressed do not have. However, I have no objection to talking about privilege - the thing where certain relationships (attorney/client, doctor/patient, etc) create an exception to the general duty to testify when subpoenaed.
Rather than tabooing certain words, learning a new language that dont contain those concepts is probably far more efficient. Many years ago I learnt Norse (ie pre-Christian scandinavian, "viking language"). It only contains one modal help verb (ie should, would, ought to, want to, can, have to) are all one word with the same meaning. Once you get fluent in a language like that your way of thinking will change and then you will change. I wonder which other languages exist that contain similar ways of avoiding certain thought traps, and which those traps are..