
ZMK users rejoice. Firefox 151 adds Web Serial API support.
I haven't tested it yet, but this snippet is from the Firefox 151 release notes.
>You can now manage microcontrollers that support serial communications in Firefox via the Web Serial API. This lets you program microcontrollers and development boards, such as ESP devices, Raspberry Pi Picos, 3D printers, CNC machines, and other devices. Web Serial can be used in Extensions, but not from moz-extension contexts at this time.
You should be able to use ZMK Studio now without having to sully your hands in a Chrome browser.