I absolutely get that. I was a bit in a hurry when I wrote the above comment, and therefore didn't get around to better detail how I use those sentences.
It's all about understanding the context and not talking down to the author.
When I see obvious improvements I use the "order" style and just state what needs to change. Because surely the author can see that the change will be for the better.
The other sentences are for bigger more complex changes where I'm curious about a certain decision. Most often I don't agree on the current design, but I would never write such a comment unless I'm ready to be convinced otherwise.
When someone has spend hours on some functionality and I spend just 5-10 minutes skimming through the code, there is a very real chance that the change I'm going to propose was already considered. It would be arrogant and condescending to just conclude that my idea is better, so I open the door for the authors explanation.
