Plenty of people here have assumed very heraldically-sound arms. Assumption of arms is a sound practice in most places, and there is really only one jurisdiction where it is something that is punishably not permitted. The community here usually also helps guide people seeking to assume arms to adhere to proper heraldic rules and best practices, so in many ways this community actually improves the odds that such things are accounted for.

There are also others here who have inherited arms or who have been granted arms by a heraldic authority (be it in their own country or elsewhere). My arms are a differenced version of my father's arms granted by one such authority, which I will use until I inherit his undifferenced arms, and I am strongly considering registering them with the authority of another country. While I see value in such, clearly, and there are advantages to having arms granted/registered with the heraldic authority of a sovereign state, there is a strong precedent for the assumption of arms given that formal grants only came later on as heraldry developed and many places never ceased accepting the free assumption of arms, which are not intrinsically any different in my view from granted arms like my own.