I don't remember for certain about that. I know (and the piece I linked talks about) her kind of assigning a broad culture to all of Samoa, and flattening out differences between groups so that it better fit her thesis.
What you're talking about has DEFINITELY happened to anthropologists, though. I remember learning about in school, but I'm not able to connect the general idea to specific incidents off the top of my head. Sometimes it was as a deliberate joke and sometimes, though, it was more about traditions in how you talk to outsiders. I seem to remember a situation where there was a cultural understanding of generally being agreeable with strangers to the point that the anthropologist got a "oh, yeah we do that" to just about every question he asked. Imagine interviewing a bunch of Minnesotans. Like that.