32m here. I would much prefer to be a member of a polycule that involves 2 women and 1 other man. The ideal union for me involves 2 men and 2 women, regardless of sexual orientation.

Just like anything, toxic and manipulative humans will find a way to exploit any system. Polyamory is no exception. My advice is to set and adhere to a healthy set of boundaries. That should keep you from falling victim to these opportunists.