Earlier quoted context omitted.
Many people who smoke have lived into their 90s. That's not a good reason to smoke. Anecdotes are not data.
Data is not the whole picture. Maybe more protein is great for adding muscle mass, and bad for a different reason... The article lists beef as it's first source of protein besides protein shakes. Beef is a class 2A carcinogen. I stopped reading there.
That's really the part you took issue with? That's a list of protein examples, not "it's first source of protein." It even says "any form of protein is likely to be effective."
Fake HN outrage?
It goes on to say "On the other hand and conveniently, any type of and time for protein was fine. The gains were similar if people downed their protein immediately after a workout or in the hours earlier or later, and it made no difference if the protein was solid or liquid, soy, beef, vegan or any other."