Good article, but after comparing it with the drafts, it comes across as a little... weakened?

Politics, religion, math, and programming are basically never the right subject matter when flirting.

I wonder why you ended up removing that line. Granted, I'd say "rarely" or "unlikely to be" rather than "never", but still, it looks like a useful pointer (or at least reminder), especially given the kind of crowd we have here.

If it's an observation based on repeated experiment, you should say it. If knowing this helped you optimise your strategies, you should say it. Or did you end up thinking that it's actually untrue?