I don't really understand why this has to be heavily marketed as Mac-only. As an open-source product, restricting the application to the most restricted of consumer operating systems (namely that any consumer hardware can run Linux or Windows, either bare metal or through a VM, whereas only Macs can easily run macOS) seems a bit sad. I had to read through the comments here to realize that as someone who doesn't own a Mac, I _could_ theoretically purchase this and use it, even if it meant sacrificing some UX.
Reading the comments, it would be trivial to even at minimum state that there could exist community support for Linux, in the form of a command-line tool, even if it's not as polished as a Mac app, considering how open this product is about its limitations, and would likely bring in more customers.