Data never being completely deleted, and the unending tracking being a slow sort of death of personal freedom is a good point, but I read the point of the poster you responded to as this: We can only do so much to secure our privacy, do effective and easy to implement solutions. If we want absolute privacy, its probably never possible until you cut out massive parts the digital world for yourself, and diminishing returns for your efforts most likely aren't worth it.

https://news.ycombinator.com/newsguidelines.html

Edit: you've done this before as well: https://news.ycombinator.com/item?id=18392730. That was already a bannable offense on HN, so please don't do this again.