I'm taking issue with the parent's assertion that a writer shouldn't make two points in the same essay. The implicit reasoning is it is distracting -- which is

I'm taking issue with the parent's assertion that a writer shouldn't make two points in the same essay. The implicit reasoning is it is distracting -- which is true whether you think the point is offensive or just wrong. That's a good reason to avoid extraneous points if your purpose is to persuade. If your purpose is to explore though, it is counter-productive to suppress intermediate waypoints.