Adults can do as they please, I only take issue when it's targeted at children. If they include this content in movies / tv targeted at children, I'm not showing it to my kids. Whether it's explicitly sexual or not, kids shouldn't be normalised to this.
Leave it to the parents with regards to when to have that conversation, I don't want it prompted by a Disney movie or progressive TV show
The original character was white, I wouldn't want it the other way around, Blade was a black character, I wouldn't want a white version. It's not just fictional characters either, Hollywood has been doing it to historical characters, basically rewriting history...
Whether it's re-writing history, or re-writing fictional works, I just don't agree with it.
The same situation could have happened between two white children btw, for a variety of reasons, not all children look like a fictional character, and children can be brutally honest at times. It's more interesting how you chose to interpret the series of events there, says a lot more about you than anything else.