Would a bad alternator cause headlight flicker?

6 years ago I had this too in my 68 Scout. Did all the checks and cleaning. Finally a new regulator, electronic, kept voltage and lights rock steady. On average these electro-mechanical units can cycle up to 200 cycles per second(Hz), to our eyes that's steady voltage. Points pit or oxide, pivots wear, coils break down, in a harsh environment of heat, cold, humidity, vibrations; it's amazing they last as long as they do before they go senile or quit.