I don't think any of the ideas in this article have any evil intent, even if they have evil results.
1. Relative timestamps are just a more useful way of telling people when something happened. It's how most humans communicate time to each other.
2. Infinite scrolling is just what happens when you're not constrained by physical pages. The only reason we used to see paged content was because it was technically easier. Facebook and Instagram even put up a big "You're all caught up" sign when you hit the end of where you were last.
3. Before Facebook had likes people would just add a comment like "+1" or "This." It didn't add anything to the conversation and just made things worse. Internet points are useful for filtering content and showing people more useful information.
Yes, all of these things have negative consequences but that doesn't mean they're inherently bad.