Comment by Delk

A bit of an issue is that the Firefox terms of use page [1] says "Your use of Firefox must follow Mozilla’s Acceptable Use Policy", and the Acceptable Use Policy link points to their Acceptable Use Policy page regarding Mozilla services [2].

So either they're saying your use of Firefox, regardless of whether you want to use Mozilla services, must also follow the same acceptable use policy that your use of their services would, or it's a massively ambiguous way of saying your use of Firefox in combination with actual Mozilla services must comply with the policy.

If it's the former, their terms of use would be in conflict with the commonly understood definition of open source and free software licensing. If it's the latter, it's just poor legalese that fails to make its intent clear. (Interestingly, the Mozilla Public License does not seem to explicitly say that there are no restrictions regarding the use of the software for any particular purpose, although that is a commonly accepted part of the definition of free software and open source.)

[1] https://web.archive.org/web/20250228155328/https://www.mozil...

[2] https://www.mozilla.org/en-US/about/legal/acceptable-use/