Take a look at https://news.ycombinator.com/leaders
The user you're suspicious of is pretty well-known in this community.
How is this whole comment chain not a textbook case of "argument from authority"? I claim A, a guys says. Why would I trust you somebody else responds. Well he's pretty well known on the internet forum we're all on, the third guy says, adding nothing to the conversation.
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Someone's credibility cannot be determined by their point counts. Holy fuck is that not a way to evaluate someone in the slightest. Points don't matter.
Instead look at their profile...
Points != creds. Creds == creds.
Don't be fucking lazy and rely on points, especially when they link their identity.