Considering that the load impedance of audio amplifiers isn't always the same, it'd be a bad idea to measure output voltage in terms of gain compression points/

Considering that the load impedance of audio amplifiers isn't always the same, it'd be a bad idea to measure output voltage in terms of gain compression points/clipping/max continuous. I agree the term "RMS" is kinda miss-appropriated, but it's short and tends to understood as something reasonably close to what it's actually about.