> What I find surprising is that the recruiter still wants me to interview even after I explained who and what I am.
Did you tell him that you're a psychopath? My point is that if a recruiter reaches out to you, it probably means your online identity matches their criteria for potential candidate. Now this criteria can be as simple as oh neat he uses haskell to I'm impressed by his contributions to project X, Y, Z. So unless you tell him something that is completely contradictory to his superficial impression of you there's no reason he should tell you NOT to interview with the company.
Also, I feel like whatever reason the recruiter decided to contact you (Github / nice linkedin profile) has very little to do with the companies hiring bar. It's a terrible proxy for measuring how a company hires. It's at best an indication of the technologies you'll potentially be working with. For example, if you only have java listed chances are you prob. would have never gotten that phone call. You should try it as an experiment.
Want to know where the bar actually is? Go for an interview. Of course, what they mean by interview is usually 1-2 rounds of phone interviews. So in essence you're still pretty far from being seriously considered as a candidate.