The title is both self- referential (Pioneer being a leading brand of DJ equipment) and oddly self-deprecating for a man who, in his time, was a groundbreaker.
APOTP is being sold as Weatherall's solo debut, as distinct from anything under his various guises, although there have been other-artist albums (notably Screamadelica) on which he was arguably the prime auteur. It's dominated by dubby dance-rock and, surprisingly, he's not a terrible singer. It's strangely dated, but comfortable with that. Hence the pox, presumably.