Actually, I don't think it would be like that at all. It would be more like if someone lived in Alaska for 13 years, and spent several years apiece in cities and towns in different parts of the state, and was engaged in the community, and then reported that Alaska had nasty winters, because they had lived through them, and their friends had lived through them, and it seemed pretty clear that Alaskan winters were rough.
But then a lot of other people came along and said, "I lived in Alaska, too, and the winters were okay. Whatever you have to say about Alaskan winters is not germane to this topic because you haven't done any research to verify that Alaskan winters are tough."
The person who originally posted that Alaskan winters were so tough, would have to say to himself, "gee, maybe their experiences were different than mine. "Tough" and "nasty" are pretty subjective phrases, after all. Nevertheless, I personally had a hard time with all those cold winters in Alaska, and so my statements -- which were always framed as what _I_ think about Alaskan winters -- remain true.