Firstly, the discussion on this thread is based on a few accidents over a time of frame of only months. To really establish accident rates, a much longer time frame is required. Does anybody have any proof that accident rates have increased since the emergence of low cost carriers? The answer is no.
Secondly, some of the worst accident records of western airlines have been with high cost incumbents such as Delta in the eighties and USair in the nineties while the low cost Southwest remained accident free.
Go figure.