Evangelism vs. Cultural Activism

An Ask a Manager reader wants to shut down an employee who is annoying coworkers by constantly discussing the Keto diet. I found Alison Green's answer valuable both for helping me understand why that kind of behavior annoys me so much, and causing me to consider how I can avoid doing the same kind of thing myself in the future.Alison replies in part:If Casey were this obsessed with evangelizing for something unrelated to diet and health -- like, I don't know, the Dallas Cowboys or Daylight Savings -- it could still reach a point where you'd need to rein it in, but it being about diet and health gives it an extra layer of obnoxiousness and adds additional urgency for you to tell them to cut it out.Constant Daylight Savings evangelism would be annoying too (as well as pretty weird) but at least it wouldn't involve judging other people's diets and pushing unsolicited health advice. It would be irritating and boring, but it wouldn't cross boundaries in the same way. [bold added]This is a…