Of course Bjorn trusts all of them, he owns the music and gets all the royalties. He can afford it. The question is whether Agnetha feels so positively, since she famously fell to sleeping with stalker drifters after the band split.
Anyway, no one coming to ABBA shows was looking at the "B"s. I was always watching and waiting for Anafrida and Agnetha to turn around so I could see those "A"s lol.
Very good singing group and so much talent.
It seems you still hear their songs on a fairly regular basis. I really enjoyed the movie Mama Mia mostly for the music and dance sequences even though I couldn't carry a tune in a bucket and have two left feet.