Most of these are just passive aggressive versions of the original, maybe more blunt, comment. The effect on me would be the opposite of what the author expects

Most of these are just passive aggressive versions of the original, maybe more blunt, comment. The effect on me would be the opposite of what the author expects. Totally unprofessional, remember that you are usually among adults, not kids. Don't be blunt but don't even use this alternative style. Both will get you fired eventually. My simple suggestion, when something is wrong, make it about us, don't target the individual and try to propose a plan to fix the issue/situation. That's the way to handle conflict, we work together, let's fix issues.