You’re describing the shortcomings of a poorly designed and laid out system, not an inherently flawed one.
In mine, the breaker is located within easy reach of the door. Adding a switch would not make securing power any easier. It would, however, add two more connections and another point of failure. Locating the breaker in a convenient spot is generally not that difficult; you’ve got 40” to play with with the addition of a simple wire sheath.
An additional switch isn’t going to prevent a loose object from banging into and opening a breaker. Secure your console, or protect your electrical components.
If you’re prone to forgetting to open a breaker, you’re probably just as prone to forgetting to open a switch.
You can argue that adding a dedicated switch is “better”, but saying that using a breaker designed to be switchable for that purpose is incorrect is just silly.