Kääpäsieni

Okay, so I'm here to share my opinion that just made it's way to my head and I can't hold it inside my head anymore. So I just saw an edit about how Sirius, Andromeda, Alphard and Regulus betrayed the noble house of Black, but I think that at least in canon Regulus never betrayed Blacks, he just betrayed Voldemort. Please give me your opinions...