Wikivoyage is a running Wikimedia project, it is about travelling, going on a holiday, seeing the sites. All these articles need their illustrations. I think that this is to be expected. It is obvious to me what kind of pictures they can be.
Many of them will be holiday pictures and, there is nothing wrong with that. These pictures will have a use, they illustrate Wikivoyage.
What I like about it is that they broaden the horizon of Commons and hopefully inject Commons with many more fun images.
The Commons challenge will only become more relevant; what will it take to make it the wiki where everyone can easily find a great and appropriate media file.