That proves my point, doesn't it?
Not only is Leia one of the very few females in the Star Wars OT, but she also manages to kill what little more there are left when she kills Jabba and blows up his ship.
According to wookieepedia, the band escaped, but that's EU, so we're assuming they all burned to a crispy death in the fire ;)
Like the video says, there were...?
Leia herself, Mon Mothma, Aunt Beru, Sy Snootles, Rystall Sant, Greeata Jendowanian and Lyn Me (the back-up singers), and Oola.
8 in total, of which the latter 7 don't even manage to combine their screentime to half an hour.
Although, if you think about it, you couldn't blame Lucas.
Leia managed to send hundreds of people to their deaths, by having them do her dirty work, so she could have revenge for some dude blowing up her planet.