amp that can double down.
In fact, from sensitivity stand point, I never look at it as an advantage for speakers that offer lower impedance, for the same arguments that you are making, and I hope no one is saying that either. However, I do think it should be obvious to anyone, including yourself, that it is advantageous to have amps that can output more into lower impedance, all the way down to 4 or even 1 ohm.
A lot of people don't know much about electrical theory beyond Ohm's law.I'm going to get into an area where I think there is a lot of misunderstanding in these forums. The issue is the relationship to impedance, sensitivity, power demands and efficiency.