What’s the point of having reverse hits?

I’ve noticed that many times there are attacks, aerials mostly, that tend to send in an opposite direction than what the attack usually sends at or is, at least animation wise, looking to send at. I’ve seen Fleet’s back air, Kragg’s fair and Zetter’s fair doing that and it makes it so people die early or later thanks to the fact that the attack send the opposite way. If I’m landing a fair, why do I have to expect it to go the other way entirely? That feels jank as shit. Even more so when the game does not have an angle viewer in its hitboxes so I don’t have a way to learn which hitbox sends at which angle outside of having a feeling. I just don’t feel like it’s a good thing to be hit by a Fleet’s bair while in front of her while getting launched in the opposite direction with sweetspot knockback. It’s the most unintuitive thing I find in the game.

When I see people mention it as a negative, there are others that try to defend it by saying reverse hits are necessary and healthy for the game without explaining why that is. As someone who does not play Melee nor PM I just don’t see it at all. Can someone give me an explanation why a mechanic that is unintuitive by design is so important or good for the game? It honestly feels like jank that people are used to have it in games like Melee that honestly feel like a relic of the past.

Not only why it’s good but, if you could, how to identify why or when that happens.