While the girls’ behaviour was immature I feel like they were set up.
It was the same last year when two new girls were introduced (Ellie and Zara??) and all the guys were invited downstairs to have drinks and chat with them first while the girls were left on the balcony to watch over them for ages before being allowed to come down. It really played on their insecurities. Then when they introduced two new guys they were just told to wait by the pool in the morning, and the whole villa got to come down and say hello at the same time so the boys could get straight into the handshakes and “nice to meet you mate” without having to watch the girls swan around them first.
It was a real marked difference and it’s obvious the producers were trying to manufacture drama from the girl’s side.
Guess they are following the exact same formula this year, which is boring and lazy.