The verse you cite is about the whole people, all of whom, through baptism, share in Christ’s identity as priest, prophet, and king. It was not cited in the article because it has nothing to do with the issue of a ministerial priesthood exercised by some.
My view would be that Greek episkopos, poimen and presbyteros, (bishop, shepherd and elder, in many translations) all refer interchangeably to the very responsible and oft-mentioned position held by elders of the NT church. Absent from any NT mention are priests in the sense of the OT usage, outside of 1 Peter 2 references. The term, "ministerial priesthood" is not to be found or even alluded to in any NT book, as I see it.
I understand Clement of Rome was probably the foremost person responsible for bringing priests and OT trappings into the NT church, not Jesus or his apostles.
HF