Many of us are likely unnecessarily worried about this lack of clarity, but we don't want unknowing fans to be punished for a rule that was not clear. The last thing anybody wants is for choices to be made on baseless assumptions and for people who have the game's best interests and longevity in mind to be punished for trying to add to something that they love! You have a community of players and content creators that want to help make your game as enjoyable as possible, but we can't do that without knowing what the rules are first. Can I use a UI mod that shows me what scrap the fan I'm looking at will give? Is that something that I can/will get banned (or otherwise reprimanded) for? All we want is open communication between the community and your team! We just want to know what the environment is.

Only implies that you should use them at your own risk.

Taken from their official support page, clearly, they do not say explicitly NOT to use them.

Please be aware that the use of such applications may result in Fallout 76 not functioning properly. We know that you guys are working on mod support, but not if using a third-party mod is a potentially bannable offense. Fallout 76 does not support the use of any mods, add-ons, or other third-party programs. Thank you for the response, but as others have said, the wording in that answer is vague in such a way that it doesn't really answer the question.

Mods for fallout 76