I'm seeing this sentiment multiple times on this thread - "fine, it's legal, but it's still wrong!"
That's an extremely disrespectful take on someone adhering to a contract that both parties agreed to. You are using shaming language to pressure people into following your own belief system.
In this specific instance, the author could have chosen any damn license they wanted to. They didn't. They chose one to get the most adoption.
You appear to want both:
1. Widespread adoption
and
2. Restrict what others can do.
The MIT license is not compatible with #2 above. You can ask nicely, but if you don't get what you want you don't get to jump on a fucking high horse and religiously judge others using your own belief system.
Author should have used GPL (so any replaced images get upstreamed back and thus he has control) OR some other proprietary license that prevents modifications like changing the image.
A bunch of finger-pointers gabbing on forums about those "evil" people who stick to both the word and the spirit of the license are nothing more than the modern day equivalent of witch-hunters using "intent" to secure a prosecution.
Be better than that - don't join the mob in pointing out witches. We don't need more puritans.