Ignorance
Unfortunately, we Americans are a bit uptight, or at least all the regulatory agencies are about language. And since they are, and because people are more than willing to sue anyone for anything, I'm not surprised if Twitter is mucking about with it. I rather enjoyed Are You Being Served growing up. Even my mom, a fairly religious and strict person when I was growing up enjoyed it. Mrs. Slocombe's pussy will be missed at my house at least.