I'm a girl and I actually hate playing the role of support, It's my most hated place to play in LOL, I play it if i get filled it, but that's about it. I'm a main mid player, but I can also play the roles of top and ADC. I find it strange how they couldn't find any other females to make that team other than support roles, there are plenty of women who play elsewhere, it's obvious the other team were going to ban supports, it's tactics right? In any other game you ban their mains, ban a combo or a champ that you know the other team play well with. Did these girls really not understand how to play anything/anywhere else? There's nothing wrong with maining one champ and one lane, if you're good at it and you enjoy it, then great! But to put that team together where they all mained the same thing, seems a little odd to me and it would still be odd if it was an all male team of support mains, it shouldn't be anything to do with their gender, but unfortunately that's what most people are focused on, it's a weird team to make in the first place, male or female.
I don't blame the other team who banned all support roles, I blame the ones that put that team together, everyone surely knew what would have happened, setting them up to embarass them?
I wouldn't let it affect you and your gameplay, like you say, support is an important role to play, your ADC is reliant on you and I take my hats off to those that main it, male or female, it's far too stressful for me! xD