I am not going to get into the specifics of any particular airline, but the bottom line is that if pilots are happy (well remunerated and treated like human beings rather than tools in a tool box) they will stay. If they are not happy and have options they will pursue those options.
If some perceive EK as a better option than where they are at the moment and there are suitable offers forthcoming from EK then that is just market forces at work.
Good times coming for all I think.