Reclining one's airline seat too far is a problem? I don't think I have ever had a seat that could recline more than a few inches.
There is a code of etiquette that frequent fliers know about how much one can politely recline? I don't fly much, but I have flown for decades and I never heard of this. When the seat belt light is on I don't recline. When it goes off I may or may not recline, but when I do, it is always the full amount. Where does the rule come from that this is incorrect? Does the person behind me have a real right of protest? On what basis? Is this an unstated convention? When someone in front of me reclines I simply accept the inconvenience. It's uncomfortable for everyone and we're all just doing the best we can.