Links like https://beta.maps.apple.com/abc still work.

Neither firefox nor chrome works on android with that link.

According to the linked support page, nothing except Apple OSes and Windows is supported; not even desktop Linux! That's quite an accomplishment in 2024. They really went above and beyond in not supporting any modern browser.

Interestingly that /abc link works for me on Linux (Brave), but the published link doesn't work for me on Linux+any browser, Chrome included.

Agreed, quite annoying. I own a bunch of Apple stuff, but when they do this crap i can't invest further into their ecosystem because it's unusable to me much of the time.

"Support for additional languages, browsers, and platforms will be expanded over time."

Sounds like it is a true beta and not a "Google" beta.

Works for me on FF dev edition. I bet WebGPU support is required (mainline FF does not support this).

Works for me on FF 127 with Chameleon posing as Chrome 126, so I think this is not the case.

Use an extension to change your useragent string; it mostly works on firefox, just expect bugs.