Pass on Netflix?

I have a question, I have some friends who give my Netflix. And today I found out that supposedly if a person looks at an account and, for example, I go to it to also watch then you get a message from Netflix and your entire account may be blocked because 2 people were on a tab.

What do you think about it? Hope I explained it clearly.

Maybe that will be the case in the future. So far they haven't taken it that seriously.

So I would recommend only giving Netflix if you trust the person

So these are familiar people, only if by chance we want to watch something at the same time, does that watch Netflix?