People have their families, their jobs, and maybe a couple of friends and that’s about it. They need an outlet to push the ideas and causes they care about. The workplace is one of the few places where they can feel like they’re having an impact, but that’s not really appropriate.
I’d hate to go into work and be harassed about being “silent is complicit” (which seems like it was one of the major drivers of the change). I would hate it even more if I went into work and people were trying to convert me to evangelical Christianity, or Islam. I like that people want to express themselves and improve the world we live in, but they need to find a better place to do that.