I don't see a problem with people having a change of view or opinion, I think it's a sign of a level and well aligned intelligence, providing the change is down to reason and logic.
The problem Ian has is that he changes his opinion for reasons of being starstruck, social ambition and crowd persuasion.
The problem for fans is that Ian has been given a position to have a voice and he strongly believes he is right and will force his opinion at whatever cost, whilst changing his opinion to fit the agenda at the time. When he's caught out he finds it impossible to understand the criticism, that's his make up.
Outside of his Internet naughty stuff I think he's an average guy, but with power people with those characteristics are dangerous.
The daft will follow, the wise will ignore.