I honestly don't think the fact of "sueing your previous employer" will matter too much for any decent employer. Nor do I think many will ask about it, if pilots are really needed. Nor do I think any of them will list "Flew for Ryanair from 20xx - 2019, sued their asses, hehe" on their CV. News cycle will move on in a bit, recruiters and HR departments will forget, they will be flying again before the end of the year if they are motivated enough. Perhaps not in their country of choice, as the market is small in the Netherlands, but that's something everyone has to deal with.