But, to explain the categorical meaning of the term, you have to lean on the sexual meaning. That is a pretty big difference. And unnecessarily scopes the audience to people that wouldn't be offended by this. Especially when ⊥ exists. Why is that not available as an emoji?
Granted, I don't think everyone needs to be prudish, such that this is a bit of a tempest in a teapot. But it is very different than claiming that explicitly sexual reframing of other items is the same thing.
You wouldn't. Just like you probably wouldn't explain the sexual meanings behind the eggplant or peach emojis to a child.
Not sure why this needs to be a consideration. If you're writing for an audience that includes children, sure, use child-friendly terms and concepts. If you don't care about including children in your readership, go nuts.