Yes, Image Attribution is against the licenses like Creative Commons, that states that the original author should be credited for the work, but the Image Attribution just makes think the reader that the person who uploaded it is the author to be credited.

But now, Wikia wants to hide even more the license tags located in the image description pages and possibly the original authors of the image if they were included there, or if the image was just reuploaded by users that only want their name to appear there (a increasing common practice I'm seeing since the new skin was set).

Wikia plan to simply replace the link to the image description page by a link to the full sized image. And this changeset proves that [1].

The reasons for moving away from Wikia aren't just the ones we all know, but the next moves Wikia hasn't done yet and will be done in the next months. Don't think about what will come next. Just take all you can now and run as fast as you can.