Sure, I first heard about this years ago when Channel 4 (a UK broadcaster) ran a program about pilots stating they were concerned about the policy. There had been outrage within the aviation industry after three fuel emergencies in one day at one airport. [0] Ryanair sued [1], and lost: Channel 4 had engaged in fair journalism, it turns out.
Seems they're still at it, hence the recent incident.
All three flights were diverted due to weather, and none of them fell below the legally required amount of fuel. One has to wonder if it’s really reasonable to criticize them in this instance if a single weather event affected them all.