Speaking of ambiguity, it would’ve been helpful to quote the text that you found objectionable as part of this critique. When you refer to ambiguity, is this the sentence at issue?

Estou escrevendo para informar que estamos com uma nova plataforma de conversa e engajamento chamada Discourse.

Perhaps it’s just my unfamiliarity with Portuguese, but this doesn’t really scream ownership. Is there some background context other than the author’s affiliation that we (those gathered here, not my institutional affiliations) should be aware of?

(I have no idea why you’re also singling out OSMUS, which is a distinct organization from HOT. But yes, I have received T-shirts from OSMUS. I’m also its board president, but I’m posting as an individual, because it would hardly concern a serious organization to take over Discourse in such a manner.)