The article doesn't say so specifically, but it's entirely possible that those two employees are JWs. I don't often support the unnecessary stands that Witnesses take over seemingly trivial issues, but this is different. No one should be forced to wear emblems advocating causes they object to, whether it be LGBTQ or BLM or Democrat or Republican issues. I think work uniforms should be company-related and otherwise pretty much generic and neutral . If someone wants to advertise his affiliation with one cause or another, they should do so on their own time.
At the very least, employees should be allowed to cover emblems on a work uniform that they personally object to.