I'd like to call this as abuse; these developers for the sake of money, will look for animal icon to the point that they will disregard the copyright, exactly what happened here, Mark should ask for compensation or charge this people for copyright infringement.
The community has been houded by copyright abuse, it used to be those popular personalities now they targeted these beloved popular animal icons to create their memes.
We'll we see Kermit the frog meme in the future?