It is a terrible name. You can do web dev in pure Assembly and it actually makes sense in contrast with yet another framework over a framework over an interpreter over POSIX-libraries.

E. g. monitoring for mission critical servers. You really don't want the whole stack of unverified goodies on these machines, but since you already have TCP/IP for SSH, writing a simple web-server that reports machine health over HTTP is like a half-day job.

And it's verifiable since it's small. It doesn't drag the whole Python infrastructure with it.