Despite the headline, this is being done by Thunderbird, not Mozilla

Thunderbird is completely independent of the Mozilla Corporation, the makers of Firefox. But the Mozilla Coperation[sic] supports Thunderbird by hosting many of the Thunderbird infrastructure and resources.

https://support.mozilla.org/en-US/kb/thunderbird-faq#w_who-makes-thunderbird

You might want to wait until after the May election to see whether Australia is immune to the rise of fascism.

You don’t happen to know what whereabouts in legislation that’s detailed, do you?