Thanks, and yes, good points! The node is aimed at people using the open statement in a "non-best-practice" way, so I'd like to keep the node short enough so that they might still read it (hence all the bold text and TL;DR at the top), and I'd like to keep the focus on the open statement itself - I left out a discussion e.g. of piped opens and checking close for errors and such intentionally, because when answering questions about that, I have other nodes I'd link to instead. Perhaps your reply to my node pointing these things out is enough? :-)
Update: Ok, I've updated the root node!