A cult is a small group driven by extreme devotion to a charismatic leader, a specific idea, or an unorthodox set of beliefs.

In this case, the 'small group' is the unelected European Commission (EC) bureaucracy who is desperate to retain power at any cost.

In anycase around 50 % of people in Island want to join the EU. Are they are of the cult?

The EU doesn't have a military, much less a draft, so that would be rather difficult.

So they are both inside and outside the 'cult' at the same time.