This is intended as a reply to https://ro-che.info/articles/2017-06-12-friendly-contributing-policies, but I don't really want it to be a blog post (it's not the right level for my blog), and that blog doesn't have comments, and I don't want to mis-express myself in 120 characters or whatever. So here goes a gist :)
Firstly, as to the talk, the context was read around the project, and figure out if it will suit you. I am deliberately quoting haskell-src-exts out of context, and deliberately not saying where either quote came from. I appreciate the full policy is much more welcoming than that one snippet would imply.
However, when I wanted to find an unfriendly contributing policy, I immediately thought of haskell-src-exts. I do genuinely find the document, as a whole, quite unwelcoming. I appreciate that languages sound different to native speakers, and it didn't stop me contributing, but it did give me pause. Whether a document is friendly or not is a feeling, and so by explaining why I have that feeling