Singles Inferno 4 Ep 7-8

Can someone help me understand the hate for Sian?

I personally thought she was clear about her feelings with Jun-Seo in paradise. She likes three men and the reason why she hasn’t been expressing herself completely to one person is cause she hasn’t decided who. I don’t understand why others watching the show so highly praise Theo for being committed to Sian while hate her for taking the time to get to know everyone. It’s a dating show and irl it’s not realistic to commit yourself to one person in the span of a few days. Comments online saying “Theo deserves better” act like Sian and Theo are a couple and she’s actively cheating on him. Has she told him she likes him? She’s not leading him and she’s not manipulating him either, she speaks to him honestly and straight forwardly about her feelings, she is confused. Unlike comments online, Theo himself understands that Sian is taking the time to decide and respects that. Saying she’s leading them on as she simply gets to know them is hilarious.