We have also been told, repeatedly, that due to the need to withdraw a significant number of NEO aircraft from service from January, in order to undertake the prescribed engine checks, Wizz would have to reduce services and axe a significant number of routes.
Given the proximity of Katowice and Krakow, there is some logic to operating to only one of them whilst they are short of aircraft. We have already seen a large number of routes axed by Wizz and there's nothing to suggest they are all suffering from poor loads. Nor does the axing of Katowice from LBA suggest the loads are to blame.
It seems that even though the airline predicted the need for cancellations and route losses months ago, you are still looking for more sinister reasons behind this.