Now I say explicitly what I think is wrong and what needs changing.
This too can come off badly so I limit reviews to one or two remarks. I also build a relationship with these engineers and explicitly explain how I do reviews different nothing that while I give you solid direction, whether you take my advice is entirely up to you to evaluate and that it is 100% ok with me if you explain why I'm wrong and you're not changing it. - the purpose of my reviews is to catch problems you haven't thought of, if you've already thought about it and made a trade off that's your call to make. (And I trust you to make it)
Translation: I'm too old for this tit for tat shit and have bigger hills to die on than where you put your whitespace.