The stated recruitment aim was to attract those near retirement, house paid off, etc. But seeing as the recruitment seems to be never ending I'm guessing that supply is/was limited. If more money is needed to attract a younger workforce, then I'm guessing they would need to up the pay for the existing workforce. Something that will probably and sensibly be resisted for as long as possible until it becomes impossible to crew the aircraft. My guess, and theirs, is that they will be able to attract enough crew on the current terms eventually.