I was literally just arguing with someone a couple weeks ago here about how while you can recline on a plane, it’s generally not an okay thing to do because there’s a person behind you who has significantly less space. No matter how many different ways I tried to explain it to them it always came back to basically “but I deserve my space”.
They’re just unaware other people exist at all. But god knows if someone reclined into them they’d be complaining about it for days.