Yes. Suggestions are good. Following suggestions with purpose is better. Or, rather, blindly following suggestions without understanding the benefits (and costs to) the suggestions doesn't seem ideal to me. -- It respects the great answer of "it depends".

Gonna admit that I wouldn't be able to tell what grep -i, sed -e do. (I would've used `sed -e` before, but not enough to remember that). Still, some things are clear from context.