The SOGC (Canadian equivalent of ACOG) did not say "all breeches" are candidate for vaginal delivery.
Rather, the point of the statement was that select moms with select breech babies, in the optimal position, of the optimal size, in the optimal care centre with expierienced care providers may consider a vaginal delivery for breech after reviewing the evidence and allowing for informed choice. The purpose was not to force c-sections for breech, but to carefully consider why a vaginal delivery or a c-section was going to be the planned route of delivery. It was also to encourage centres to allow women to have an attempt for a vaginal breech delivery, if the circumstances are "low risk". However, this "low risk" for a breech does not mean they are low risk pregnancies, but rather this is the best case senario for a successful vaginal breech without maternal or infant harm. The goal is to select women with the highist likelihood of success (the Term Breech Study showed the greatest maternal risk for an emergency c-section in labour), with the least risk for the baby.
Here in Canada, I do discuss vaginal breech with women who meet criteria. Most choose a primary c-section. A few attempt a breech vaginal delivery, but mostly this was women who had vaginal devlieries before or the menonnite population I worked with because one vaginal breech attempt was much less risky that multiple VBAC attempts (this community had large families, so this was a real consideration). Rarely will I have a planned breech vaginal delivery in a primip. However, I have delivered several babies breech, who were unplanned vaginal deliveries, as they presented in advanced labour with optimal maternal and fetal factors and we decided (mom and me) that a vaginal delivery may be less risky at this point. Had I seen them the day before they were in labour, I would have recommended a pre-labour c-section.