It's not pointless though, it shows heaps legitimate of reasons to hate and then just makes the characters give them up because they don't like how icky it is. Are you stupid?
The manga has no message, it's just plot twist for the sake of plot twist which makes rereading or reading for the first time once it's been completed pointless. Objectively terrible manga tahtcs just a daytime soap.
There is literally no reason for us to care about the aliens. They have done nothing but ruin human lives without a care. "They were looking for a better life!". So is every other human, so is the guy that robs me, so is the termites that eat my house. No one cares.
The thing is this isn't the exact same. Japan is so perverted they do gay shit and then act like it's just neutral perversion. Like gay niggas in america just calling it "the downlow" instead of admitting to being gay.