Also depends how exact 2 years ago is. From the beginning of covid until a few months ago it was quite understaffed as they didn't bother keeping staff training/certifications up to date as they didn't expect demand to pick up so quickly as it has.

I have to say that pre-covid, Dublin airport has been one of the better airports in my experience. Security was among the fastest of airports I've been in, decent variety of shops behind it, flights departing smoothly