No, we all know what you're trying to say, we are telling you your logic is wrong but you just don't want to hear it.
A gain knob is not a volume knob or a magic watt-o-meter.
As a matter of fact an amp can make its full power with the gain all the way down of the input voltage is high enough.
The gain is to match the input voltage, plain and simple,
What are you going to do if your max clean setting is almost nothing on that gain?
Also once again, wiring at .5 ohm and turning down is still not the same for the amp as wiring at 1 ohm,
A 1ohm stable amp doesn't suddenly become a .5ohm stable amp because you turned it down.
But I'm guessing you won't listen and will just keep thinking you're are right because you weren't here to get told your logic is wrong, you just want somebody to cosign on your ignorance.
All that being said, if your electrical can support that amp at .5ohm that amp will handle it just fine.
It will take more current to make the same power at .5ohm than it will at 1 ohm because the amp will be much more inefficient so your electrical better be up for the task.
You can't magically get around the laws of physics.