This is not always the case because as far as I know you can see some pages without having to login first, but they seem to be a minority and so I learned simply to ignore such links.
It has nothing to do with dis-/liking fb or not, it's just a matter of practicality.
Interestingly, in the same thread that hnha started, there is also a posting by brokenparser about NOT being able to access the linked content - https://news.ycombinator.com/item?id=6228750 So, not only is your position a non-sequitur, it is also based on inconsistent evidence.
Also, all the text you type on your smartphone goes to the fbi. You can probably be id'd by what you mosspell. It.s a question of whether they give a fuck.
Resistance is poodle!