Regarding stealing the power cosmic from Surfer and Galactus, I accept that they were severely weakened when he did it. It is still an omnipotent power that electronics wouldn't be able to process.
Electronics work on....wait for it....electricity. You can use some devices to convert different forms of energy into electricity, such as solar panels or generators. You can even use electricity to generate different types of energy, such as with motors, speakers and LEDs. But electronics use electricity and if he is somehow generating power cosmic, he'd be better off stealing electricity from a power plant. His electronics cannot process anything other than electricity.
You don't use electronics to control light, you use optics. You don't use electronics to control sound, you use acoustics.
Electronics work on....wait for it....electricity. You can use some devices to convert different forms of energy into electricity, such as solar panels or generators. You can even use electricity to generate different types of energy, such as with motors, speakers and LEDs. But electronics use electricity and if he is somehow generating power cosmic, he'd be better off stealing electricity from a power plant. His electronics cannot process anything other than electricity.
You don't use electronics to control light, you use optics. You don't use electronics to control sound, you use acoustics.