Sorry about that. Where in the article did we assume the gender? Looking and I'm not seeing. Not native english speakers though so there may be something we're missing.
But on a more serious note the article does switch from the neutral "they" to a gendered "he" in at least one place (see the other comment), which is not just unnecessary but also inconsistent. Just stick with "they", unless the person's gender is important (note: it almost never is, even "women's issues" don't require an implicit "she" and using "they" in these cases is actually even more inclusive because it also covers trans men).
"be relaxed and relax them too, with a fraternal and understanding tone"
The word "friendly" would have been a simpler synonym in that sentence.