It is NOT a non-monetary feature.  But see this is why you shouldn't go around concerning yourself with telling other people how they can and can't use their money, because you're just going to make mistakes in your determination. Anyone will.

People act against their own interests all the time, also a common theme for shitcoiners is essentially that while their bitcoin is currently worth more, they own a much larger percentage of the supply from some shitcoin, so fucking up bitcoin to pump their shitcoin is something they imagine will still be a net win.

That's nice but it's not really a logically consistent position.  If someone is willing to pay a lot of money in fees they can drive fees up-- end of story.  Nothing being discussed here has anything to do with their ability or willingness to do so.

That isn't about "storing" harmful data, -- it's just that the entire ethereum ecosystem is incompetently and insecurely designed such that it's impossible to programmatically tell what anything is doing, and so attackers can snow users who are trying to figure things out.