[pessimizer]

Speaking of semantic shifts, "reasonable to expect" has nothing to do with obligation or whether people deserve anything. It's "reasonable to expect" that it will rain tomorrow, based on what I've seen on the weather maps and in the forecast. The rain has no obligation to me to fall.

[AlotOfReading]

"Reasonableness" is a decent way to describe the norms of a social contract. They're not legally enforced (reddit clearly has no legal obligations here besides), and 'unethical' feels like the wrong adjective. It's also the word grandparent comment used. What word would you choose instead?