I finally figured out what some people were concerned about. Apparently there is already a phrase called harm reduction or harm minimization that I wasn't aware of. This phrase specifically refers to reducing harm around drug and sex related activities. This is a naming collision on my part for the title of the meme.
However I stand by my usage of the words for the title. I was using the words harm and reduction together because that is what makes sense to me for the topic based on the definitions of those individual words. I wasn't referring to harm reduction the phrase and I think that was clear to most people. Also, it's just for the title of an internet meme. No one is co-opting the phrase harm reduction or using that phrase incorrectly. I hope that clears up that confusion.