Hopefully it isn't intentional to suggest that you need to be a genius "guy" to do this. To be fair, this is about where I closed the article so maybe I missed the point.
It's entirely orthogonal, but the other half of that, the implication you have to be a “genius” to write a compiler, also annoys me. Is it really rocket science?
(I suppose it depends on what “real” means, though.)
> You probably have to be one of those genius guys ...
Used in the plural, 'guys' usually just means 'people'/'folks' - "alright guys, shall we get going?" - Mac Dictionary agrees.
Happy people don't go around looking to be insulted.