as it relates to the protocol and ownership of your own wallet and funds, not to what people and communities do with their money or resources
I disagree. Such behavour develops more scamish vulnerability of the person. One day it is "I will send you sth, send it further, it's a nice game" and another day it is "Lend me some money, I will send it back later".
From me - big NO NO NO.
Yet you're fine with delegated proof of stake? Isn't that trust in 20 people? So, which is it?
But, you make a fair point. There was no agreement prior to the transfer. Personally, I wouldn't hold it against you if you kept it or did whatever.
I don't want to hold it. I don't need it.
Then either return it to the person who sent it to you, pass it to whoever else seems to care, or send it to @null for fun and as something that is actually good for STEEM