Some time ago we were taxing on the Runway for Take Off that was reported to be slippery with medium to good and some slush.
We did not believe them and insisted on a runway check.
Then the braking action was reported to be poor and contaminated with double the value that was reported first.
As far as I can see and understand Ryanair I think it's fair to say that, Ryanair is probably not the easiest airline to work for, but it surely is a character-building environment.
In other words it’s a no bull**** company and the positive side of it is that you do not accept any bull**** from others including ATC.