Really? Seems analogous to sharing, I dunno, a private Google sheet with somebody. If my friend's Google account is compromised, because they reused a password

Really? Seems analogous to sharing, I dunno, a private Google sheet with somebody. If my friend's Google account is compromised, because they reused a password lost on another site, I wouldn't blame Google for the attacker being able to read the sheet. I shared it with my friend knowing that might happen.