No, I do not think the team is sexist in any way. The people who have already received the incorrect rewards were not meant to get it. It was a mistake and should never have happened, however that was only ~12% of everyone in the bounty.
I understand that the total amount of payments may decrease for various reasons, but are you think it's fair that the participants for the equally valued video (in one category) receive different rewards?
in my opinion it is permissible to change the amount of rewards between campaign types but within one campaign to change is not fair