Just open the page and then browser's developer tools, make it reporting us as Windows, and it just works after reloading.
Or better yet, just don't buy Logitech products and look for non hostile brands
Solaar does work to change it, it's just that I have to go back and change it again every time I plug it in to charge, and then once more when I unplug it.
Looks like OpenRGB doesn't list my specific mouse but does support the wired version, so maybe I'll give it a try.