Everything else is intermediate. If hypothetical examples are given as "he", I generally don't have a problem with it -- it's understood to mean "he or she." If nobody, ever, gives female hypothetical examples, though, I might start to worry that it's spreading the impression that there are no female rationalists. My own preference is for a mix of hypothetical "he"s and hypothetical "she"s, instead of the clunky "he or she" or the ungrammatical "they." If your post has more than one hypothetical example, make some male and some female.

I tend to divide my constructed hypothetical actors approximately equally. I bias the distribution such that females are more likely to receive the more impressive sounding roles because that is more politically correct (and it also just seems more natural and polite to me to put the 'other group' actors into the more positive position.)