“You” is ambiguous in English.

https://www.merriam-webster.com/dictionary/you:

  1. the one or ones being addressed 
  2. ONE sense 2a (which is “being one in particular”)

So, pro tip: in chat-like discussions with strangers such as hacker news, one should prefer saying “one” when using sense 2, even if it sounds a bit archaic (at least to me. Is it?)

Also, when reading a “you” that could be interpreted both ways, do not assume it is used in sense 1.