Which is why Power Rangers 20 years ago was casting female Yellow Rangers to replace the male ones in Super Sentai. It sounds like SS ended up following PR's lead in that respect but now is having a backlash.
This is ridiculous. There were two female rangers from Bioman to Jetman. Zyuranger was the first in almost eight years to have one female. The yellow being female/male depends on whose producing and writing. They had a yellow males from Zyuranger to Kakuranger probably because of the same writer. Gingaman to Abaranger probably because of how popular Gingaman and Gaoranger was.