It's certainly clever, but I anticipate plenty of confusion (written, spoken, typed, search engine, etc) due to the Hamming distance between "firestorm" and "firestore". I really wish people would stop trying to use overly cute names.

This is the nomenclatural equivalent of code golf. If someone bragged that they overlapped two constants to save 3 bytes, I would not consider that an improvement. Whatever happened to the belief that communication was more important than brevity?

Some teams even test their user interfaces with users. Names are part of the user interface, yet I've never heard of anyone in software testing a name.

It really is a great name, I'd feel compelled to write it if I had come up with it.

It's not like they were first, and will probably have to change their name:

https://www.firestormviewer.org/