I'll skip over over your answering "where does it end" with where we start, but more importantly:

This is a game, because it initially masquerades as using the definition of "harm" any reasonable person would use, while simultaneously working the other end to redefine and vastly expand the concept of "harm".

We're now supposed to recognize unpersoning, microaggressing, belittling, twitter-mentioning as harm, and it's naivete bordering on manipulative to try to and make the case that our understanding of harm will not continue to expand