Very badly implemented. Aer Lingus and Iberia short haul have been LCCs for years, Iberia Express and Vueling are full LCCs. Why not work with other group partners to roll out a dependable service.
The second it became apparent that these wonderful space age payment machines aren't working as planned, they should have switched the policy the next day to accept cash and should have until this day as it seems a workable solution is still no clearer.
All it will do is annoy customers. If they think easyJet charge for bags, charge for seat assignment and charge for food whilst managing to actually serve more passengers and get everyone served then..... I might as well fly EasyJet.