He's concerned that his views may become controversial in future. Someone with published centre-right views in Cambodia in 1965 would have felt fairly safe. Fifteen years later they would have been dead.
(Ah! I notice you've edited it. It's worth pointing out that 'Political Correctness' was originally a term to describe the 'correct' behaviour of people in totalitarian states.)
> Perhaps I should add a new step, post after the edge cases have been considered
Or use the "delay" feature on your HN profile page: e.g. mine is set to 2, meaning after I post a comment, I have 2 minutes to edit, reconsider, proofread or delete before anyone sees it.