Veritasium videos are often extremely misleading. In this case the cooling universe lacked carbon for these organic compounds. Life cares about 0-100c because of water which depends on Oxygen would be missing etc.

Just as example in one video he refers to the field outside of the wire carrying the energy for electricity, however EM waves propagate at the speed of light and fall off at the square of distance. Electricity can travel thousands of miles without that kind of falloff but doesn’t propagate as fast because it’s electron density in the wires that causes what we think of as electricity. He then setups up an antenna and … well you get the idea.