So the argument in question was about a technical matter which is not appropriate to share externally. The software engineer with "strong anti-vax opinions" bel

So the argument in question was about a technical matter which is not appropriate to share externally. The software engineer with "strong anti-vax opinions" believed that vaccines are net beneficial, but not that they should be absolutely forced by pulling a child out of parent's arms. In return, you and "many others" threatened to report their kids to authorities. Or maybe it was another debate, can't tell from limited context. In any case, either it was work-related, in which case engineer in question had full right to express an opinion. Or, it was pure idle chit chat, in which case it seems unprofessional to pile on, let alone share externally years later. Are you also in the habit of posting office gossip from Facebook on this site? As for personal belief exemptions, Trump declared a national emergency on Southern border. If civilians are somehow deputized to build the wall, do you want to be forced into it or to be able to declare a personal belief exemption?