Whilst there are plenty of reasons to get the hell out of Ryanair, you can't blame the company culture for this event. Ryanair has developed comprehensive SOPs to reduce the chances of this type of brainfart from happening and I dare say this incident is no more or less likely to occur at any other airline.
Many things Can happen in a cockpitt. I Can understand this could happen in a Ryan aircraft with these craizzy long brief Thay haft to do, occopying there situation awerreness from flying.
A long brief does not make you to be a skilled pilot. I have seen brief's in Ryan up to 10-15 min long...