Same here - whenever I see someone trying to get around giving honest feedback, and trying to frame it as "humble curiosity" instead, I immediately assume they read some "leadership" articles and are trying to apply it because they are second guessing themselves. I believe it depends a lot on the culture, but I am much more used to either keeping my mouth shut (when there is nothing on the line) or being blunt (when it matters). Either way, no sugarcoating or "being curious".