Seems like all the pedants came out for this article. In good-faith I understand the principles OP is suggesting and have first-hand experience of their usefulness. But it's easier to nit-pick I guess.
Everytime I discuss Bash on the net, these gremlin style characters ruin the fruitful discussions I've had ... I think the article provides excellent advice.
This is a case where the pedents should at least be considered.