You're totally qualified to tell people what they should be learning.
Ignoring the 3 paragraph post, and the assertion that Rails is the only web framework for ruby (or that python and php also have only one), I don't get why this guy doesn't link to some code he's written or to a thing he's built?
Its shit like this that gives HN a bad reputation.
That said, I don't subscribe at all to "I tried hard so tell me I did well". Like I said, I would have loved to see something the guy had written.
One thing that /really/ pisses me off though if trying to give advice you're not qualified to. It's dangerous and destructived. If you were trying to quickly knock something up and this guy told you that "CodeIgniter is the web framework for PHP" and then you burned days on it, would you be pleased?
Any one that would follow the advice of someone that self-admittedly is only a number of weeks in on the subject blindly gets what they deserve. That being said, there is no reason for someone to tell other new people what worked well for them. I believe people are more comfortable talking to and listening to other recent converts - they can identify with them more than the greybeards of whatever language they are interested in. I don't see a problem with someone being enthusiastic about learning something new and fun.