Frankly, I don't care as long as government isn't involved. Companies (and other organizations owned by individuals) should have every right to hire/fire people based on the language they use, no matter what language that is. Same with companies that decide who they want to sell to and who they don't want to sell to.

I'm very much against the idea of governments limiting speech or forcing behavior on private individuals, with some exceptions in the case of the tragedy of the commons (like with environmental protections, overextraction of renewable resources, etc).