I'm not entirely sure this is true wrt the gender thing, one could easily substitute grandpa and it would still make the same sense. As far as being discriminatory against age, I really can't see how you came to that point. Perhaps assuming that old people don't get technology in general might be an unfair assumption as there are plenty of those in that age range who do get it, but I don't think that makes it wrong to use such a conception.

At that, I don't particularly think it's being discriminatory at all. It isn't perpetuating some ideal that all old people or all females just don't get the idea of databases. This comment sorta strikes me as unnecessarily reactionary, rather than focusing on the content and substance of the article.