That's good to know, wonkit, if so. And yeah, mad, your point is not moot. Classist is probably the better term for what I intended to imply, though racist more often than not was likely a rather dramatic side effect.
And, of course, it is my never my intention to describe the balcony structure in and of itself as harboring any prejudicial views. I just always used the shorthand as a way of describing it, because (I believe) it is the only theatre left with such a feature and is the oldest one as well; as a link to another time I find it fascinating.
Words don't deserve that kind of malarkey. They're innocent, neutral, precise, standing for this, describing that, meaning the other, so if you look after them you can build bridges across incomprehension and chaos. But when they get their corners knocked off, they're no good anymore…I don't think writers are sacred, but words are. They deserve respect. If you get the right ones in the right order, you can nudge the world a little.