That is a poor retraction.

What it should mention is that some individual carriers do have reciprocal agreements. e.g. A/C membership entitles one to Business class or Qantas club lounge access when flying Qantas. Moreover (as posted by Dave), QP membership entitles one to BA (or A/C) lounge access before flying BA (or AA).

Yes, paid access is not a oneworld benefit, but the retraction in that article is too sweeping; discouraging people like berk1 from digging further.