Yeah, there is a big difference between Reddit and Facebook in the above comparison. All the examples of issues with Reddit can more or less be attributed to specific people and fall more in line with "bad" human behavior. Facebook's algorithm is something entirely different in it's design - it's primary objective is to manipulate the behavior of the user on the other side, and what it chooses to show or not show doesn't follow any human line of reasoning outside of some loose built in "safeguards" and unenviable content moderators meant to serve as the guardrails.