Oh, they are advices out of context, it seems.
So, please, come on: no one give "advices" about something they don't
think. These are useless advices. Every advice comes from a specific
problem.
So, if you're advicing "not to have sex with a local", then...
...then you think it is *possible* that someone would consider it, not
necessarily *likely*. Is anyone claiming that no Wikipedian would ever
consider sleeping with a local during Wikimania?