So GC's whole statement is that it is "a tournament for women and marginalised genders". You will get this response from any mod, but with how things have gone the last few streams, they probably just instaban anything that could be implied as transphobic. To answer your question, there is no limit on the mix - you can play 5 women, 5 trans/nonbinary people, it's all within the regulation for GC. There is no politics asides a lot of identity politics going back and forth so I would always say to not pay too much mind to what's going on. If you are enjoying the stream, just watch the game. If you don't like what you see, by all means feel free to click off because there are thousands of Valo streamers on Twitch.