I mean, you could interpret remix in a few ways. Editing this specific image? Perhaps it hasn't been done but that doesn't mean it can't be. If we're considering the core message of the post to be the meme, then I would say it has been remixed. This isn't the first post I've seen conveying this sentiment in similar (but distinct) wording. Theres a reasonable basis for this interpretation in my opinion.

Just because you and I lack the imagination and possess enough empathy to not edit this meme doesn't mean there aren't other people out there who can/have