I agree with you but now people new to electronics know about solid state amplifiers not requiring a load when trouble shooting.One 'tool' I use when trouble-shooting an amplifier with an intermittent short, for example, is a series light. The defective amplifer is not connected directly to the 110 volts ac supply. I have made up a special socket connected to a two-position toggle switch which is fused of course. In one position the 110 volts ac is normal but in the other switch position the 110 volts ac is wired in series with a 100 watt light bulb which limits the current to the unit under test. While performing tests on the amplifier if the short shows up, there is usually no harm done because the light bulb limits the current to about 1 amp. This is also handy after replacing new parts in an amplifier. If I have made a wiring mistake or some other mistake when working on a repair-I always fire up the unit first through the series light just in case. This has saved me not blowing any newly-installed components.