[remotefonts]

You mean we can use the development version of Firefox, which gets almost daily updates and also breaks things a lot of times. An important caveat.

[rstuart4133]

No, I don't mean that.

The post is dated 2022. The feature became generally available in v120. Stable is v123, so it is available now. It's gated, so you still have to enable it as described in the post.