I don't know that one cheeky tweet from their pr/marketing team mens they gladly advertised password sharing as a feature. Would need to go back to the TOS for subs back then. Multiple screens is one thing, but multiple households is another.
I've mooched off my parent's cable account for 10+ years for streaming well after I moved to another state. As services cracked down on the practice I personally have never felt entitled to the TV services my household was not paying for. Some I chose to pay for myself, others I realize aren't for me and don't subscribe. Forl Netflix, I haven't yet broached the subject of joining accounts and paying for the additional logins option, but maybe I'll do that as a cost saving measure. But I can't think of a moral justification for why my household should be entitled to a TV service my parents pay for hundreds of miles away from where I live.
When CEOs talked about password sharing it was under the marketing POV that those folks would eventually convert into subscribers naturally. I guess they didn't expect it to become the norm. https://techcrunch.com/2016/01/11/netflix-ceo-says-account-sharing-is-ok/