Weak entropy is closer to the anonymous envelop. There is no way to contact the owner of a wallet created with weak entropy.

But, put it this way: if your mother created a wallet with weak entropy, and you serendipitously found the weak entropy wallet and then took the funds, but you honestly didn't know they were hers until months later when she complained about an anonymous "hacker".

Would you give her, her funds back? Would you tell her you 'just found an anonymous wallet' and so you wouldn't give it back? Would you just stay quiet, lie by omission?

Does this change, if its a stranger?

You asked to have somebody change your mind. I have tried. I have my own answers to the above. I wish you the best, in figuring out your own answers.