How do these complex characters come about? Surely they could express the same meaning with a couple of smaller characters? I feel that this is comparable to w

How do these complex characters come about? Surely they could express the same meaning with a couple of smaller characters? I feel that this is comparable to writing "Jentacular" instead of "pertaining to breakfast." It's a single word instead of 3, but who understands that (let alone write it, in Biangbiang's case)?