I think the main problem with the lcc is that the crew are under so much presure from there management its un beliveable this however is no excuse for rudeness however here are some of the reasons i feel the cabin crew are rude but there is no excuse for it.
1) They are working 5/6 days in a row doing 4 flights a day meeting nearly 700 passengers a day, with only 25minute turnarounds if they do not make the 25minute turnaounds they are called up into the office to explain why. When for example long haul carriers are doing 3 or four return flights a month.
2) The flights are very short and you are presurised by the management to get your sales targets and yes they do have targets to meet. This in turn makes snappy crew.
3) With the short flights and quick turnanarounds many crew do not have time for a proper brake just as you are about to sit down for a cuppa tea or a sandwich the seatbelt comes on for landing.
4) so overall the crew are so tired and fed up I know some people will be shouting leave get another job its not as easy as that. Shorthall with lcc is hard work and stressful and Iam afraid to say this shows when they deal with the passengers.