If people want to confer reverence on a venue, it's up to them. Wigan never set out to be the oracle of the soul movement, they were trying to run a good dance that people enjoyed and came back to. If they said it was the heart of soul later when they were established, that was a marketing ploy which most people in the know would be wise to. If others are more gullible and believe what they are told by businessmen who are after their buck, that's their naievity.
I wasn't particularly a Wigan fan but put it all in context and it was a place where the majority of the music was brilliant and it was up to the audience to reject the crappier ones.