I would consider misinformation about JWs on the web to be a different matter, one that has to be dealt with on a case by case basis. But I
confess I had not heard that he had JW family when I made the original comment (I made it a couple of months ago). Not much more to say about that, then, except that - if this is his honest opinion - then he and I disagree.
I will agree with you that there is misinformation about JWs, yes. Many people think JWs don't believe in Jesus because they don't celebrate
Christmas, for instance, or confuse them with other "smallish" religions. (I used to be a JW, BTW, and have been married to one for nearly 20 years.)
Misinformation is not the same thing as having a different opinion about the Watchtower or its teachings than JWs have, however. As far as JWs are concerned, they are telling the truth when they criticize "worldly" people and other faiths, even though those "worldly" people obviously do not share those opinions. Likewise, critics of the WTS aren't necessarily spreading misinformation for doing the same in return. (You didn't specify what you meant by misinformation, so I'm just clarifying what I mean here.)
Have a good day, Jen.