Think you should identify this label better and once you do, you'll know if there's anything to correct. From a glance at this, I'm reading "toxic discussion"

Think you should identify this label better and once you do, you'll know if there's anything to correct. From a glance at this, I'm reading "toxic discussion" as relating to inter-department communication. You mentioned that you have no qualms speaking your mind about faults of other departments, but is it possible that this kind of blunt communication is creating political problems for your managers and coworkers? When you make vocal statements about an another department, you're seen as representing your department and your boss in those statements. That may not be what your boss wants to be publicly associated with. In technical problem solving, it's easy to make a very easy read of problems and state them clearly, but in an organization they're seen as accusations and criticism. Often, there are strong defensive reactions from being called out and they can start a chain reaction: another department withdraws support or resources, or escalates their complaint which then comes down on your boss.