No full output signal to the subwoofer!

I recently purchased a NAD 3050, and prior to buying it I reviewed the manual to ensure that the subwoofer output provided a full-range signal, which it clearly states.

Unfortunately, that does not appear to be the case. In reality, both a low-pass and a high-pass filter are dictated through the BluOS app. The subwoofer cannot be used without setting a crossover point, which I find very unusual.

For decades, crossover management has been handled directly on the subwoofer itself, without DSP or mandatory low/high-pass filtering upstream. No one ever complained about that. Why does BluOS feel the need to dictate how users integrate their own subwoofers? At the very least, there should be an option to disable the crossover and high-pass filter entirely.

Reducing low-frequency content to the main speakers is also quite strange, especially given that bass accuracy is often superior on full-range speakers. In many systems, a subwoofer is intended only to supplement the very lowest frequencies.