The journal in this case is presumably licensed under a CC licence that permits commercial reuse and derivatives. In that case, they do need the same (or less restrictive) licence on each image that they want to include. Fair use won't be sufficient.
While I doubt they would, in a case like that, they could have included a link to the image instead of the image itself. This is less than ideal in a lot of ways, but it would appear to solve most of the issues.
Comments
The journal in this case is presumably licensed under a CC licence that permits commercial reuse and derivatives. In that case, they do need the same (or less restrictive) licence on each image that they want to include. Fair use won't be sufficient.
While I doubt they would, in a case like that, they could have included a link to the image instead of the image itself. This is less than ideal in a lot of ways, but it would appear to solve most of the issues.