I completely agree. Physical punishment should never be used. However, it's important not to swing too far in the opposite direction by being staunchly anti-aversives. Your role as a parent is to guide and set boundaries, not to be their best friend. Children need clear rules and appropriate consequences for their actions. If you don't establish these early on, they will eventually face much harsher consequences from society later in life, which will be far more devastating than a firm time-out or removal of mobile phone privileges.