@mischievoustomato @SuperDicq
Bern convention Article 6b introducing then is short enough:
> Independent of the author's economic rights, and even after the transfer of the said rights, the author shall have the right to claim authorship of the work and to object to any distortion, modification of, or other derogatory action in relation to the said work, which would be prejudicial to the author's honor or reputation

Also note that in many countries those rights are inalienable, so even a corporation cannot get it assigned to themselves as part of employment contract like they usually do with copyright.

>> trademark (forcing them to use another name)
> how effective is this?

I've often seen trademark used against adding ads/tracking in software or around it (see GIMP and SourceForge for example), but also just modifications which upstream disapproves with (or even any non-pre-approved modification, see anything from Mozilla).
Do note that they could just change the branding to get away with it though.