It may be somewhat subjective, and it is probably hard to compare the many airlines that have had no fatalities or serious accidents (reported at least) in the last 30-40 years; like Ryanair has.
But you said Ryanair were the safest of any airline (by far), which seems strange as there are many airlines with similar safety records as Ryanair. Why should they rank above everyone else?
In the end the customers will decide, but hopefully we can avoid another load of customers hitting the ground in MAX (or 8) crash.