Honestly, this may seem f*cked up, but I like reading the comments, seeing what the community has to say. Yes, at the end of the day, the meme is offensive. Us as humans, however, would make mistakes like this. Like someone at a party with multiple raced people at the same party, and then that someone says something really racist and pisses everyone off. In fact, that entire example I just gave could come off as insulting.
Long story short, we all make mistakes and, at the time, the creator of the meme may have thought it was funny.