Being stupid or just trolling? There is a language difference. ofc brazil is part of south america, but all gaming companies split brazil from the rest of south america, it’s very obvious why. They can release servers and game clients in portuguese to brazil and spanish to the rest of South america.
And speaking of continent, America is one geografical continent. Yet, most people say “South america” and “north america”.

There are many definitions and they change based on the criteria used.
You must be so pro in geography right. If we were to go by the criteria you are using there is no such thing as Europe and Asia only Eurasia