Here follows a pessimistic post ...
Well, this all presents an interesting buisiness opportunity to anyone willing to take the stance: We REALLY do our maintenance properly and that's why are fares are a bit more expensive. Come and inspect our workshops that are not outsourced etc. Inspect the certificates on-line etc.
Not a chance, short term cash for the board and shareholders wins every time. In any organisation, once this kind of malaise sets it, it is very difficult to get it out. The longer you leave it the worse it is and the more expensive to fix it. The usual cure for this malaise is dead bodies. For example, London Underground King's Cross fire, which was due to poor maintenance [cleaning] that had been pointed out.
It would seem that getting any doubts about an a/c should be made and filed off the a/c before take off. The flight and data recorders might not capture all the relevant information.