Quite frankly, nutshell.
Any perceived history that lays the grounds for the rivalry from their perspective (dockyard strikes that never existed for example) is just groundless conjecture put into place to justify what is at it's heart simply a geography issue. The poor opinion from many Saints, myself included, is based on their club's very recent and utterly evident behavior as detailed above. Until the start of the century they actually barely registered and it was almost to the point where I didn't mind seeing them be reasonably succesful as they are another south coast side and it would only benefit the area for two clubs to be challenging towards the highest level possible.... like I currently feel about with Bournemouth.
I have no particular dislike for any individual Skate but the collective lack of contrition and humility over their team's recent behaviour and continued trumped up and groundless belief that their club has a divine right to be at the top table just fuel's my hope that they do keep stumbling from calamity to calamity before eventually ceasing to be entirely.
They have become a parody, it's best just to point and laugh before the joke gets stale.