Not advocating for the other person, but there's a big difference in what you're comparing it to. People choose their religion, and they choose their profession. If those 2 things are in direct conflict, like a religious scientist, the audience of their work should be made aware of that conflict.
I want to go off of this slightly and ask a similar question. Why is there no shopping network using activitypub? An open source replacement for facebook marketplace, ebay, etsy, and ideally amazon too. Seems like something that could really put a dent in mega corporations revenue and userbase, or maybe I'm just dreaming too much lol.