I can’t agree with this more, thinking coworkers are owed your attention especially during breaks reeks of narcissism. My job doesn’t include or train me for providing therapy to old men who exclusively watch Fox News in the break room and debate which minority is to blame for the world scaring them. Which is why after trying to add reason to these conversations a few times eating lunch in your car can be a healthy option.
For a fun science experiment, you can ask friends and family whether the knives whisper to them as well. If you are rigurous in your methods you may learn whether the source is the knife, or your brain, or according to that one relative, Illuminati broadcasts from the COVID microchip.